General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. It is often described as "2.5G", that is, a technology between the second (2G) and third (3G) generations of mobile telephony. It provides moderate speed data transfer, by using unused TDMA channels in the GSM network. The theoretical limit for packet switched data is approx. 171.2 kbit/s. A realistic bit rate is 30–70 kbit/s. A change to the radio part of GPRS called EDGE allows higher bit rates of between 20 and 200 kbit/s. (from Wikipedia)
hi,
i am looking for the correct registry keys to see what data connection type the phone is currently logged in (i.e. active) or available.
i am talking about the different types of data connection referred to as E, H, G, U, ...
furthermore, if anybody could help me out with the values.
what i have found are the following two registry keys, but i want to check with you if these are really the correct ones.
HKLM\System\State\Phone\Cellular System Available
9 = Edge
40, 41 hex = HSDPA
HKLM\System\State\Phone\Cellular System Connected
8 = Edge
thanx
update:
so far we have got:
Code:
HKLM\System\State\Phone\Cellular System Available
8 and 9 = Edge
16 and 17 = 3G
64 and 65 = HSDPA
HKLM\System\State\Phone\Cellular System Connected
8 = Edge
16 = 3G
64 = HSDPA
still missing:
GPRS
Umts
some more?
please, have a look into your registry. i'll keep this post updated.
thanks
Cellular System Registry
Actually its:
64 - HSDPA
32 - EVDV
16 - UMTS (ie. 3G)
8 - EDGE
4 - 1xEVDO
2 - 1xRTT
1 - GPRS
2147483648 (80000000h) - CSD
This info is a little late, but hopefully this info would help us writing applications to detect the data connection state and even use the State and Notifications Broker.
Found the info here:
http://www.pluralsight.com/community/blogs/jimw/archive/2007/04/20/46866.aspx
http://www.pluralsight.com/community/blogs/jimw/archive/2007/04/16/46804.aspx
Until March 31 Vodafone D2 had three Cell Broadcast Channels in service: 50 (BestCitySpecial Area Codes), 100 (Index) and 833 (Network Element Identifier).
Since today Channel 50 and 100 are out of service. But is Channel 833 still active or also inactive now?
I'm taking a short trip to Europe (Paris, London) using VZW meager international data plan (not going to contact everyone with new SIM phone # for a short trip).
I want to make sure that I'm not incurring data charges while in Europe. So, in Settings > More > Cellular Networks > Data roaming is OFF. Is that all I need to do?
Right now, my settings are:
Data roaming = off
Preferred network type = LTE/CDMA
Enhanced 4G LTE Mode = on
System select = CDMA roaming mode automatic
Network Access Point Names = Verizon internet
Network operators = automatic
I have an Xperia X Compact F5321, about a year and a half old. When the issue started it was running Android 7.0, software 34.2.A.2.47 and then I updated through the night like 6 times to 34.2.A.2.69 etc until 34.3.A.0.252, the last 7.1.1 version.
No luck there.
Phone is not rooted but it was flashed with UK version to enable fingerprint reader, as soon as I got the phone.
A couple of days ago I started to notice that 4G/LTE wasn't working very well. Trying to access sites on Chrome rendered a DNS resolution error and it only worked after turning airplane mode on and off.
Several hours later the whole cellular function of the phone suddenly stopped working (calls, SMS, 4G). At times it read that there was no SIM inserted (though there was one), but most of the time it stated that there was zero bars (empty triangle).
Whenever I boot it now it will read "no SIM" for a long time until it gets to zero bars.
I got a new SIM card but it's still happening.
I looked into this and I found out about the #*#*4636*#*# and *#*#7378423#*#* menus , as well as some other users with the same issue which they haven't been able to solve, including two in this forum who have not been successful.
Checking out phone info it says that signal is -1dBm and 99 ASU and radio is off.
Full readout is below.
It shows the cellular radio power as turned off every single time. If I turn it on, leave, and go back to the menu, it's off again. It's constantly getting turned off, automatically.
So it would seem the cellular radio is not working, I cannot get it to stay on, and that's why I don't have a signal.
At the same time, since for some periods of time it isn't recognizing the SIM card, it could be that the card reader has become faulty out of the blue.
Or perhaps the baseband chip isn't working.
BTW, if there's an app or method to check hardware level issues, I'd like to give that a shot.
I do drop my phone quite a bit (has a case) but there were no drops the day this started happening.
I don't know if it's a hardware or a software issue but I'm inclined to think it's hardware.
I tried changing the preferred network type between global, LTE, GSM, WCDMA, Unknown, etc. but those choices don't stick and it doesn't help. I messed around with several of those settings to no avail.
I've tried updating the software but not the software repair so far because I want to delay that as much as possible while I diagnose the issue.
Same goes for taking it to a service shop.
Any ideas?
Phone number: unknown
Current network:
Signal strength: -1 dBm 99 asu
Voice service: Radio off
Data service: Disconnected
Voice Network Type: unknown
Data Network Type: unknown
Voice Call Status: idle
Roaming: not roaming
Set preferred network type: LTE/UMTS auto (PRL) [I've tried setting it to other options, doesn't help. Always reverts to that default]
Ping tests for IPv4 and IP v6: Fail(2)
HTTP Client test: Fail: IOException
Data Connection Real-Time info:
Message waiting: false
Call redirect: false
Data Sent: 0 pkts, 0 bytes
Data received: 0 pkts, 0 bytes
Number of PPP reset since boot:
Cellular Radio Power toggle: is off every time I access this diagnostic. Turning it on does not change the above info, and it turns off as soon as I leave.
VoLTE provisioned: off [turning it on doesn't help]
SMSC: blank
TOGGLE DNS CHECK 0.0.0.0 allowed [changing this doesn't help]
Cell Info Refresh rate:
Disabled [starts this way every time I access it, changing it doesn't stick and doesn't change the above or below info]
Cell Location info: just unknown or LAC and CID = unknown
Neighbor cell info: no neighboring cells
All cell measurement info:
I just found out about this, could it help?
fastboot erase modemst1
fastboot erase modemst2
SornyPanatronic said:
I just found out about this, could it help?
fastboot erase modemst1
fastboot erase modemst2
Click to expand...
Click to collapse
https://forum.xda-developers.com/showthread.php?p=78329808#post78329808
Use Flashtool and flash the same UK fw you used at first, (might work with any one but...), but check boxes in 'exclude' section so it looks like the screenshot...
SornyPanatronic said:
I just found out about this, could it help?
fastboot erase modemst1
fastboot erase modemst2
Click to expand...
Click to collapse
Hi, did anything helped to you? Facing similar issue with my X compact, but I did not flashed anything.