Overview of changes in ModemManager 0.5.2
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- Better detection of registration state when connecting
- Added support for more Ericsson modems
- Many memory leak fixes
- Ensure Gobi devices are driven by the gobi plugin
- Added multi-part SMS message support
- Better handling of requests when modem is disabled
- USSD fixes for Huawei devices
- Added support for Nokia Internet Sticks
- Fixed quirky response handling on some Cinterion modems
- Fixed CREG response handling on modems that include the RAC
- Skip sending power-up command if modem is already powered up
- Added support for Sierra Wireless devices using Icera chips (USB305, Lightning)


Overview of changes in ModemManager 0.5
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- Added a mechanism to get remaining incorrect PIN attempts
- Added a mechanism to retrieve the equipment identifier (MEID/ESN, IMEI)
- Added support for returning devices to factory settings
- Better compatibility with Blackberry GSM devices
- Added a Location Services API with support for GSM devices
- Fixes for Novatel CDMA devices (home/roaming status, better signal quality reporting)
- Better detection of EVDO registration when device is in 1X mode
- Add support for newer Alcatel devices like X220D
- Support for more ZTE devices (Rocket 2, LW272, others)
- Fix modem detection failures with some Sierra devices
- Add support for newer Ericsson devices
- Add an SIM identifier for use when auto-unlocking modems
- Add an device identifier for use when MEID/IMEI is not yet available
- Handle signal quality reporting for GSM modems that don't support AT+CSQ
- Add preliminary USSD support
- Fix reconnection attempts with some Sierra devices
- Add support for pseduo-ethernet interface on newer Sierra devices
- Add support for various Linktop devices (LW273, etc)
- Implement standard D-Bus Properties interface PropertiesChanged signal
- Add support for Qualcomm SMD-connected modems
- Export modem state over D-Bus
- Add D-Bus API for CDMA modem activation
- Correctly report HSPA+ access technology
- Correctly report home vs. roaming state with basic Sprint CDMA modems
- Add D-Bus API for power-cycling/resetting modems
- Add support for USSD responses
- Finer grained and more consistent logging
- Blacklist more usb-serial dongles unlikely to be modems
- Add support for platform serial ports
- Loosen permissions for reading device information
- Add support for Samsung Y3300 Icera-based modem
- Speed up probing process when ports support AT commands
- Better SMS reception and reporting
- Add support for some Wavecom modems
- Add support for Simtech-based Prolink PH-300
- Add support for Alcatel X200
- Fix various crashes when modem is removed
- Improvements for Samsung modems
- Support access technology reporting for Qualcomm Gobi modems
- Fix communication with Nokia N900 devices
- Support multiple CDMA Rm protocols
- Fix handling of Option access technology reporting
- Fix handling of CDMA EVDO registration states
- Fix problems reconnecting Ericsson F5521gw modems
- Better handling of some Android handset modem

Fixed bugs:
rh#597296 rh#583691 rh#597088 bgo#626421 rh#585394 bgo#628105 bgo#627935
bgo#621815 rh#632516 lp:682282 bgo#590798 lp:673457 bgo#636040 bgo #636438
bgo#638038 bgo#637140 rh#544121 kde#266807 novell#674022 rh#583691
lp:765516 bgo#641661 bgo#652682 bgo#650740 bgo#652910 bgo#637327
