:"This article is about the iPAQ PDA; for the iPAQ Desktop Personal Computer, see iPAQ (desktop computer)."

iPAQ presently refers to a Pocket PC and personal digital assistant first unveiled by Compaq in April 2000; the name was borrowed from Compaq's earlier iPAQ Desktop Personal Computers. Since Hewlett-Packard's acquisition of Compaq, the product has been marketed by HP. The device is the main competition to the Palm, but provides more multimedia capabilities using a Microsoft Windows interface. In addition to this, there are several Linux distributions that will also operate on some of these devices. Earlier, units were modular. "Sleeve" accessories, technically called jackets, which slide around the unit and add functionality such as a card reader, wireless networking, GPS, and even extra batteries were used. Current iPAQs have most of these features integrated into the base device itself.

Hewlett-Packard introduced the first SmartPhone iPaq Pocket PC that looks like a regular cell phone and has VoIP capability. The series is the HP iPAQ 500 Series Voice Messenger. [http://www.hp.com/hpinfo/newsroom/press_kits/2007/3gsm/ds_ipaq500series.pdf HP Press release] ]

History and development of iPAQ models

The iPaq was developed by Digital Equipment Corporation Western Research Laboratory (WRL), the internal code name for it was Itsy. The name was used by Compaq to continue their "Compaq Aero" handheld line. With the acquisition of Compaq by Hewlett-Packard, HP stopped producing their Jornada line of Microsoft Windows powered Pocket PCs and continued developing and marketing Pocket PCs in the iPAQ line.

In June 2003, HP retired the h3xxx line of iPAQs and introduced the h1xxx line of iPAQs targeted at price conscious buyers, the h2xxx consumer line, and the h5xxx line, targeted at business customers. They were sold pre-installed with the Windows Mobile for Pocket PC 2003 Operating System. The h63xx series of iPAQs running the Phone Edition of Windows Mobile 2003, the hx47xx series and the rz17xx series, both running the Second Edition of Windows Mobile 2003 were introduced in August 2004. In February 2005 the iPAQ Mobile Messenger hw6500 series was introduced to selected media at the 3GSM conference in Cannes, France.

In February 2007, HP announced the iPAQ rx4000 Mobile Media Companion devices to work as a PDA/media device and rx5000 Travel Companion series to work as PDA/GPS units. Both series of iPAQs work on the Windows Mobile 5 Operating System. In the same month, HP announced their first Windows Mobile 6 device, the iPAQ 500 Series Voice Messenger, with the Windows Mobile 6 Standard Operating System, and numeric pad. Currently, the only iPAQs being sold which run the Windows Mobile 5 Operating System are the hx2000 series, the rx5900 series and the hw6900 series.

The entire iPAQ line was completely revamped by the introduction of five new iPAQ series to complement the introduction of the iPAQ 500 Series Voice Messenger earlier in the year. The models announced were the 100 Series Classic Handheld, the 200 Series Enterprise Handheld, the 300 Series Travel Companion, the 600 Series Business Navigator and the 900 Series Business Messenger. Of these newly introduced models, the 100 and 200 Series are regular touchscreen PDAs without phone functionality, and hence run the Windows Mobile 6 Classic Operating System. The 300 Series Travel Companion is a first for HP since it is not a PDA. Marketed as a Personal Navigation Device, it is a handheld GPS unit operating on the Windows CE 5.0 core Operating System with an HP-built custom user-interface. The 600 and 900 series are phones with integrated GPS and 3G capabilities, running the Windows Mobile 6 Professional Operating System. The 600 series featuring a numeric pad and the 900 series features a full QWERTY keyboard.

Model variations

Compaq iPAQ H3600 series

Compaq's flagship iPAQs were the 3600 series models. Originally running the Microsoft Windows for Pocket PC 2000 OS, these devices featured 12-bit color displays, 32/64 MB of RAM, and 16 MB ROM.

Models in the 3600 series are:

3630, 3635, 3650 - which are identical models with 16 MB ROM and 32 MB RAM sold via different marketing channels. The 3635 was accompanied by a CF expansion sleeve that was sold separately with the other 2.

3660, 3670 - 64MB RAM. The 3670 was distributed in the US while the 3660 was distributed in Europe.

A Pocket PC 2002 OS upgrade is available, but the smaller ROM requires some software such as the media player to install in volatile RAM instead of the ROM as in the previous Pocket PC 2000.

As used units at low price, they are a great way to inexpensively get started with a PDA.

While limited by no on-board expansion slot, the iPAQ 3600 series memory and functionality can still be expanded by optional Compact Flash and PCMCIA sleeves, which allow users to add memory and peripherals. Some of these sleeves contain extra batteries to extend the iPAQ's battery life under the strain of added devices.

Compaq iPAQ H3100 series

This model was released after the 3600 series as a lower end & cost-effective model. It has a grayscale semi-transmissive STN LCD and only 16MB RAM. It had very limited success.

Compaq iPAQ H3700 series

These devices had the exact same form factor as their 3600 model predecessors, however, they had an increased ROM size and ran the PPC2002 OS natively.

Compaq iPAQ H3800 series

Compaq's original high-end series models. These units were also the first to include 16-bit screens, incorporated an SD card reader and the highest RAM capacity of any Pocket PC. They were also the first to offer integrated Bluetooth, on select models such as the 3870. The 3850 had 206 MHz StrongARM CPU, with 32MB ROM and 64MB RAM, 240x320 TFT screen, running Microsoft Pocket PC 2002.

Compaq iPAQ H3900 series

Compaq iPAQ H3950

ROM 32MbRAM 64Mb1x Secure Digital (SD) portIrDA interface

Note: this base model does not have a Bluetooth interface.

Compaq iPAQ H3955

400MHz Intel XScale processorWindows CE 3.0 (Pocket PC 2002)ROM 32MbRAM 64Mb16-bit color TFT LCD display with over 65,000 colors1x Secure Digital (SD) portConsumer IR and IrDA (115kbit/s)No Bluetooth interface on 3955 - see 3970/75External i/o ports -- USB/Serial software includes nevo tv remote, calculator and windows media 8.0optional Expansion Packs with removable batteries - for standard PC and CF cards

Compaq iPAQ H3970

US commercial / worldwideIt uses a 400mhz processor and has 48MB of ROM and 64MB of RAM.It has one SD card slot.It has IrDA and
Bluetooth 1.1 interfaces.Expansion systems are available for power and for expansion cards such as wireless.Software includes nevo tv remote, calculator and Windows Media Player.

Compaq iPAQ H3975

This model is identical to the H3970, it is the US retail release

HP iPAQ H1900 series

After HP's acquisition of Compaq, the 1900 series was the answer to Palm's budget units. A smaller, slimmer frame made it more competitive in terms of portability. The HP devices contained 64 MB of main memory, larger than all other budget units, and ran PPC2002 (H1910 only) or 2003. They introduced removable batteries, allowing the user to buy extra batteries and swap as necessary. Unlike older iPAQs, many existing iPAQ accessories were incompatible or unsupported due to the budget nature of the new series.

The H1900 series did not implement support for RS232, [ [http://pinouts.ru/PDA/ipaq_22p_pinout.shtml HP iPAQ h1910,h1915,h1920,h1930,h1935,h1937,h1945, h2200,h2210,h2215,h3800,h3900, h4150,h4155, h4300,h4350,h4355, h5100,h5155,h5400,h5500,h5450,h5455,h5500,h5550,h5555, h6315,h6340,h6340,h6365, hw6510,hw6515,hx2000,hx2100,hx2400,hx2700,hx4700,hx4705 pinout and signals @ pinouts.ru ] ] so many GPS devices are incompatible with the handhelds in the series. Only the rx1950/rx1955 had a serial interface implemented. [ [http://h18000.www1.hp.com/products/quickspecs/12255_ca/12255_ca.HTML#Standard%20Features HP iPAQ rx1950 Pocket PC - North America/Canada QuickSpecs ] ]

HP iPAQ H5400 series

Introduced as the next generation of the iPAQ corporate line after the 3900 series, adding Wi-Fi support, improved Bluetooth and a biometric scanner. However, the 5400 was plagued with many bugs, though most were corrected through firmware upgrades. The CPU is the ARM-based Intel XScale PXA250.

HP iPAQ H5500 series

A corrected version of the 5400 series with double the RAM (128 MB) running on PPC2003, PXA255 CPU.

HP iPAQ H5100 series

A cutdown version of the 5500 series, without Wi-Fi support and the extra RAM (only 64 MB).iPAQ Backup allows for safe, easy, automatic data copying

HP iPAQ H2200 series

Targeting the general consumer, the 2200 series is almost every bit as capable as their corporate counterparts (less RAM, no integrated Wi-Fi, no biometric scanner). Main memory size was 64 MB RAM, PPC2003, better support for iPAQ accessories than the 1900 series though still no iPAQ expansion "sleeve" support. Bluetooth, SD card and CompactFlash card support built-in. There is an advanced IR port built into the 2245 and 2210 models (and perhaps others in this series), and the software bundle includes a program which essentially turns this device into a universal remote control.

HP iPAQ H4300 series

Similar to the 2200 series in terms of features, the 4300 series targets the corporate audience by having a beefier battery and integrated Wi-Fi in addition to Bluetooth. No CompactFlash reader, but does have a SD-card and SDIO slot. A thumb keyboard is integrated into the device.

HP iPAQ H4100 series

Essentially the corporate version of the 1900 series with many of the functionalities that were stripped from the budget unit. Also adds Wi-Fi and SDIO. Closer to the 4300-series internally. It came with PPC2003.

HP iPAQ hx2000 series

Aimed at the business market, this series of PDAs supports built-in Wi-Fi (but not in the hx21xx sequence), Bluetooth, SD Card and CF Card slots, and Windows Mobile 2003 SE. Some have included a Microsoft Windows CE 5.0 firmware upgrade disc. The different models have some different features.

HP iPAQ hx21xx sequence

This series of PDAs sported only the barebones set of features listed above, and ran a slower 312 MHz XScale PXA270 processor. No fingerprint reader or Wi-Fi and only 64 MB of memory.

HP iPAQ hx24xx sequence

520 MHz PXA270 CPU, 64 MB RAM and ROM. WiFi and Bluetooth.

HP iPAQ hx27xx sequence

A very full featured business class PDA. Sporting a 624 MHz Intel PXA270 XScale processor, 128 MB of RAM and ROM (each), bluetooth, WiFI and a built-in biometric fingerprint reader, this model set is aimed at high-security and -performance enterprises. The fingerprint reader, with the proprietary HP ProtectTools software, can create "encrypted folders" in RAM or on storage cards (in these models' case, the iPAQ File Store, the SD Card, or the CF Card) to prevent anyone from swiping the memory cards and reading sensitive company-critical data.The processor, running at the aforementioned 624 MHz, helps with the encryption/decryption processes (HP ProtectTools can also encrypt the entire contents of the onboard memory).

HP iPAQ hx4700 series

The hx4700 series was designed to replace the corporate-targeted 5500 line. Specifications included a sturdy magnesium-alloy casing, 4-inch diagonal VGA screen at 65K colors, integrated Wi-Fi, Bluetooth 1.2, MMC and Secure Digital slot with SDIO, Compact Flash slot, 64 MB of RAM and 128 MB of ROM, and an Intel XScale PXA270 624 MHz processor.

The unit ships with a removable 1800 mAh battery in the original package, with a 3600 mAh extended battery as an option. The hx4700 is known as the first and onlyFact|date=February 2007 Windows Mobile PDA with a dual-mode touchpad.

By design, models of this series are not compatible with previous IPAQ jacket accessories, but the proprietary USB connector at the bottom is still the same. No case is included in the factory-shipped box; the unit comes with a screen cover only. 3.5 mm headphone jack accepts iPaq 55xx series 4-pin plugs. [http://www.handhelds.org/moin/moin.cgi/HpIpaqHx4700Drivers Forum post relating to the release] ]

At first release, the hx4700 units ran Windows Mobile 2003 Second Edition. Pocket Informant 2005, built-in encryption software were also included. The after-market NEVO TV (remote control software) is incompatible with the Fast IR included with the device, as NEVO Remote requires Consumer IR.

In April 2006 HP finally issued a Windows Mobile 5 upgrade option for hx4700 users, available at the HP website. The upgrade included updates for most of the other included software, including Pocket Informant.

In June 2007 an unaffiliated Russian programmer updated the WM5 ROM to a much improved WM5 AKU 3.5, thereby fixing many problems the earlier WM5 (AKU 2.02) had been plagued with and giving an old device a "second life." [http://forum.xda-developers.com/showthread.php?t=311140&highlight=kozhura+hx4700 Forum post relating to the release] ]

In August 2007, the same Russian programmer released a WM6 ROM for the hx4700, which was in its fourth revision as of January 2008. [http://forum.xda-developers.com/showthread.php?t=325727 Forum post relating to the release] ]

In October 2007 a so called "ROM kitchen" was adapted for the hx4700 using the above WM6 ROM. [http://forum.xda-developers.com/showthread.php?t=335422 Forum post relating to the release] ]

HP iPAQ rz1700 series

The HP iPAQ rz1700 series is a budget line, with non-built in (but available as a WiFi SD Card) Wi-Fi and IR transmission, as well as a USB cable. The devices run Windows Mobile 2003 SE and have 32MB of RAM. They had a microphone input, a SDIO slot, 3.5 mm headphone jack, a 240x320 colour screen capable of displaying 65,355 colours and a 203 MHz Samsung processor.

HP iPAQ rx4000, rx3100, rx3400 and rx3700 series

Billed as "Mobile Media Companions", some of these models feature Nevo personal media software, onboard 1.2 megapixel cameras (rx3400 and rx3700), Bluetooth, Wi-Fi, and an onboard Secure Digital card slot for extra documents or media.

The rx4240 and rx4250 are great medium entry PDAs: bluetooth, Wi-Fi, Windows Mobile 5, Mobile Office and heaps more are preloaded. The rx4000 range features a Samsung 400 MHz Processor, and boasts a larger 128 MB ROM and 64 MB SDRAM, Up to 64 MB user-available memory on the 4240.

The rx3100 and rx3400 had 32 MB of RAM and 300 MHz processors, whereas the rx3700 had 64 MB of RAM and a 400 MHz processor. The latter also came with a 1440 mAh battery as standard, rather than the rx3400's 920 mAh unit.

These models have been known to suffer from a bug related to the way the iPAQ File Store, the rx3700's ROM, operates and manages files. This bug prevents the user from deleting or renaming files on the ROM, causing significant deficiencies in its operation. This bug is known by HP, but there is not yet an official solution for the problem.

The current version of the Windows Mobile 2003 SE operating system has been known to cause issues with Bluetooth functionality. Some patches have been released by the manufacturer, such as for Bluetooth headphones, but others, such as connectivity with HP GPS devices, have not been released. The devices continue to be non-functional for these models despite being published as compatible.

HP iPAQ h6300 series

Pocket PC Phone. Contains a GSM phone, 64 MB RAM, 168 MHz Texas Instruments OMAP processor, and comes with a detachable thumb keyboard. Also includes VGA quality camera and 1800 mAh battery. It has built in Bluetooth and Wi-Fi (802.11b).

T-Mobile used to sell the h6315 but has decided to withdraw it from the market. The firmware was never updated to remove all of the bugs which cause sporadic behaviour, including dropped calls, not answering calls, turning off, erasing all user memory (factory reset), etc.

Variants include the h6340 which is sold in parts of Europe without a camera through normal distribution points- hence is not carrier specific. The h6365 has identical specifications to the h6315 but it is not signed to a carrier.

HP iPAQ Mobile Messenger hw6500 series

This iPAQ is the first Pocket PC phone to have built in Global Positioning System (GPS) capabilities with support for NMEA. When no GPS signal is available the device attempts to calculate its location by switching to cell triangulation. It has an integrated keyboard and unique 240x240 resolution. It may seem that the screen size can be an advantage regarding the standby time, but there are reports that actually many software products do not work on this device as they should because they were created for the standard 320x240 resolution (menus are not fully visible, hidden buttons- sort of problems). However this issue can be resolved via 3rd party virtual screen applications enabling you to scroll down to the truncated buttons.

It has two card slots SD SDIO and mini-SD and like its predecessor the h6300, two versions are/were available: one with camera and one without.

Most notably, compared to the previous model, this unit does not have internal support for WiFi.

Specifications can be found [http://h18000.www1.hp.com/products/quickspecs/12133_na/12133_na.HTML here] .

This unit, as with most similar units, comes in a variety of languages. For a number of reasons, including the assurance of price in higher priced markets, languages are designed to not be changeable on the units. For example, if you have a unit with a German operating system, you cannot "officially" change the language.

The language can, however, be changed to English at this time by flashing the BIOS using upgrades released by HP.

HP iPAQ Mobile Messenger hw6900 series

These units entered the market in late 2006. Anticipated specifications can be found [http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/HP_iPAQ_hw6900_Mobile_Messenger_Data_Sheet_02.21.06.pdf here (PDF)]

Like other iPAQs released in the prior to this one, this unit has internal support for WiFi as well as Windows Mobile 5. It includes a GSM phone, Bluetooth, and GPS built-in.

The IPAQ HW6915 is available in the market as of 2007.

HP iPAQ rw6800 series

HP iPAQ rx4000 series

HP iPAQ rx5000 series

HP iPAQ rx5700

HP iPAQ rx5900

Dubbed the travel companion, this series of iPAQ PocketPC from HP has a built in GPS navagation system, 802.11 B/G wireless, Bluetooth 2.0, a 400 MHz Samsung processor, Windows Mobile 5.0, and anywhere from 64 MB to 2 GB of internal memory. It also has an integrated microphone and speaker, with a 3.5 mm headphone jack, an SD slot, and a 1700 mAh removable battery.

HP iPAQ 100 Series Classic Handheld

This is the simplest series of iPAQs in the revamped iPAQ line. It features the following: [http://h18004.www1.hp.com/products/quickspecs/12780_div/12780_div.HTML iPAQ 100 Series - Quickspecs] ]

Processor: Marvell PXA310, 624 MHz ROM: 256MB RAM: 64MB for running applications Display: 3.5-inch QVGA TFT with touch screen, portrait oriented Wireless LAN: 802.11b/g 1,2 Bluetooth: v2.0 with EDR Headphone jack: 3.5mm 4-pin Connector: mini-USB Battery: 1200mAh, removable/rechargeable Expansion: SDIO, high-capacity Speaker, microphone (In some countries,microphone is blocked by HP.) Input: touch, stylus Buttons: 5-way navigation with press to activate, 4 programmable, voice recorder, power, reset LED: 2 multi-light Operating system: Windows Mobile 6 Classic Edition

HP iPAQ 200 Series Enterprise Handheld

Known as the Enterprise Handheld, this series features a Marvell 624 MHz PXA310 XScale ARM Processor, 256 MB ROM and 128MB of RAM. It also features Bluetooth and 802.11b/g wireless connectivity and Windows Mobile 6.0 Classic. [http://h18004.www1.hp.com/products/quickspecs/12781_div/12781_div.HTML iPAQ 200 Series - Quickspecs] ]

Model: HP iPAQ 200 Enterprise Handheld Operating System : Windows Mobile 6 Classic Screen Size: 4 inch Weight: 6.8 ounces Processor: Marvell 624 MHz PXA310 XScale ARM Battery: 2200 mAh battery

It includes both SD (SDIO and also supports SDHC memory cards) and CompactFlash card slots.While the iPaq connector may appear to be the same as the one on the hx4700 model it replaces,it is not.

HP iPAQ 300 Series Travel Companion

This is the first HP iPAQ which is not a PDA. It is a device meant solely for navigation. Users can synchronize their Contacts with a Host PC's Outlook using a HP proprietary utility. The www.iPAQ.com portal was also simultaneously launched to complement the functionality of the device and to deliver updates. HP does not support the installation of third-party applications on the device.

Features: [http://h18004.www1.hp.com/products/quickspecs/12782_div/12782_div.HTML iPAQ 300 Series - Quickspecs] ]

Operating System : Windows CE 5.0 with an HP-built custom user interface Processor: SiRF Titan 600 MHz ARM11 dual-core processor ROM: 2GB (user available memory varies based on maps installed) RAM: 128MB Display: 4.3-inch WVGA 800x480 TFT with touch screen, antiglare, landscape orientation, 16bit RGB depth Bluetooth: v2.0 with EDR1 Headphone jack: 3.5mm 3-pin for stereo and microphone Connector: mini-USB Battery: 1700mAh, removable Expansion: SD, high-capacity, supports SDHC class 2, class 4, and class 6 memory cards Speaker: 1, large for navigation volume Microphone: 1, positioned speakerphone, echo cancellation Input: touch, stylus Buttons: power, reset, scroll wheel LEDs: 2 - 1 blue for wireless, 1 dual-color for charge (amber for charging, green for fully charged)

HP iPAQ 500 Series Voice Messenger

Introduced in the first half of 2007, the iPAQ 500 Series Voice Messenger was the first iPAQ from HP running the Windows Mobile 6 Operating System. It is also the first and currently, the only iPAQ which runs the SmartPhone version of the Windows Mobile series of Operating Systems from Microsoft.

Features: [http://h18004.www1.hp.com/products/quickspecs/12657_div/12657_div.HTML iPAQ 500 Series] ]

Smartphone with 12-function keys Operating System : Windows Mobile 6 Standard Quad band GSM/GPRS/EDGE wireless radio with automatic band transition1,2,3,4 WiFi: 802.11 b/g with WPA2 security Bluetooth: Bluetooth v1.2 wireless technology Processor: TI OMAP 850 Processor 200 MHz Expansion: Micro-SD slot (memory only) Camera: Integrated 1.3 MP Battery: Li-ion 1100 mAh Display: 2.0" micro-reflective TFT 176x220 with 64K color LED backlight

HP iPAQ 600 Series Business Navigator

The device features a revolutionary touch-wheel interface on the numeric keypad. Also, the HP Enterprise Mobility Agent is included which helps businesses deliver updates to multiple devices simultaneously from a central location.

Devices with model numbers ending in "c" come with an in-built camera, such as 610c, 612c, 614c.

Features: [http://h18004.www1.hp.com/products/quickspecs/12783_div/12783_div.HTML iPAQ 600 Series - Quickspecs] ]

3G wireless broadband connectivity for voice and data
** Tri-band HSDPA 7.2 Mbit/s (850/1900/2100 MHz)
** Quad-band GSM/GPRS/EDGE (850/900/1800/1900 MHz)Wireless LAN: IEEE 802.11 b/g5 Bluetooth 2.0 with EDR1 Assisted GPS (A-GPS) navigation Operating System: Windows Mobile 6 Professional Navigation: Smart Touch Wheel, 3-way thumb wheel, touchscreen, and 12-key numeric pad Display: 2.8-inch 240x320 TFT color touch screen Camera: 3 Megapixel autofocus (optional) Battery: 1590 mAh Li-ion RAM: 128MB SDRAM ROM: 256MB Flash ROM Expansion: Micro-SD (SDHC) Interface: Mini-USB connector for charge/sync

HP iPAQ 900 Series Business Messenger

The 900 Series Business Messenger is very similar in features to the 600 Series Business Navigator, in that the 900 Series also has 3G capabilities, A-GPS navigation, runs Windows Mobile 6 Professional, cameras are included only with models ending in "c" and the HP Enterprise Mobility Agent can be used to deliver updates to several devices from a central location.

Features: [http://h18004.www1.hp.com/products/quickspecs/12784_div/12784_div.HTML iPAQ 900 Series - Quickspecs] ]

3G wireless broadband connectivity for voice and data
**Tri-band HSDPA 3.6/7.2 Mbit/s (850/1900/2100 MHz)
**Quad-band GSM/GPRS/EDGE (850/900/1800/1900 MHz)Wireless LAN: IEEE 802.11 b/g with WPA2 security Bluetooth: v2.0 with EDR1 Navigation: Assisted GPS (A-GPS) Operating System: Windows Mobile 6.1 Professional Navigation: Alphanumeric keyboard, scroll wheel, 5-way navigation, 2 soft keys Display: 2.46-inch 320x240 TFT color touch panel Camera: 3 Megapixel autofocus (select models) Battery: 1940 mAh Lithium-ion RAM: 128MB SDRAMROM: 256MB Flash ROM Expansion: Micro-SD card slot Interface: Mini-USB connector for charge/sync

Quick reference chart


These older models are compatible with the iPAQ Jacket which can have 1 CompactFlash, 1 PC Card or 2 PC Card slots.

iPAQ jacket PN 173396-001 PCMCIA (PC port) x1 internal Li-ion battery PN 167648 3.7v 1500mAh (upgradable)

Newer models

Alternative operating systems for the iPAQ


NetBSD will install and run on iPAQ.

Familiar Linux

An alternative Linux-based OS is available for the iPAQ, called Familiar. It is available with the Opie or GPE GUI environment, or as a base Linux system with no GUI if preferred.

Both Opie and GPE provide the usual PIM suite (calendar, contacts, todo list, and notes) as well as a long list of other applications. Support for handwriting recognition, on-screen keyboard, bluetooth, IrDA and add-on hardware such as keyboards are standard in both environments.

The v0.8.4 (2006-08-20) version supports HP iPAQ H3xxx and H5xxx series of handhelds, and introduces initial support for the HP iPAQ H2200, Hx4700, and H6300 series.

Plan 9 from Bell Labs

Plan 9 from Bell Labs runs on the iPAQ. The nickname of the architecture is "bitsy," after the name of the ARM-based chipsets used in many of the machines.

Ångström distribution

See [http://angstrom-distribution.org/ Ångström Distribution]


Some of the iPAQ series are upgradeable to newer versions of the Windows Mobile software. This is limited to very recent releases, such as the hx2000 series. Upgrades are available from HP for approximately US$39.99 + shipping, and include the Windows Mobile 5.0 software and an updated version of Microsoft ActiveSync.

Internal Li-ion battery

iPAQ model 3100 - 3700 are fitted with internal Li-ion battery PN 167648 3.7v 1500mAh which can be replaced with a 2200mAh upgrade. The same battery is used in the iPAQ jacket PN 173396-001 PCMCIA (PC port), which can also be upgraded to 2200mAh.

RAM Upgrade

It is possible the have the internal RAM of an iPAQ H3970 upgraded to 128Mb, however this requires a specialist service as the RAM chips are surface mount BGAs which cannot be removed with normal soldering equipment.

ee also

*Personal digital assistant
*Windows Mobile
*SuperWaba: Free and open software development kit for Pocket PC and Linux iPAQs.
*Pocket PC


External links

* [http://www.hp.com/ipaq HP iPAQs official website]
* [http://www.ipaqchoice.com iPAQ Choice] - Website for purchasing iPAQ software
* [http://www.ipaqrepair.co.uk/ iPAQ Repair and Parts] Website dedicated to iPAQ Repairs in UK
* [http://www.netbsd.org/Ports/hpcarm/ NetBSD on iPAQ] The following is a dead link. (Retained for historical purposes)
* [http://plan9.bell-labs.com/wiki/plan9/Installation_on_Ipaq/ Plan 9 from Bell Labs on iPAQ] (referred to as Bitsy)

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Look at other dictionaries:

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