Use this tag for questions related to the cellular radio communication in a device (not necessarily the firmware)

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2
votes
1answer
1k views

Where the driver for CDMA/GSM hardware?

i.e. I have a phone in CDMA from HTC, who provides the CDMA hardware driver (radio-firmware ?),Google Android source tree or HTC? If the driver is provided by Google Android source tree, then I can ...
8
votes
1answer
225k views

What is the difference between GSM and WCDMA when switching to manual Network Mode?

I was reading this answer and I need to comprehend this better: What is the technical difference between "selecting GSM" and "selecting WCDMA" in Network Mode settings menu? To save battery life, I'm ...
1
vote
3answers
2k views

How to fix Telstra network dropouts on Gingerbread Oxygen ROM?

It's a long shot, but figured i'd give it a go.. I've installed the Oxygen RC6 ROM on my Telstra HTC Desire. It's pretty much perfect - better than this phone has ever been. It's fast, great to use, ...
9
votes
2answers
2k views

Turn off cellphone (SIM) radio

How do I turn the cellphone (SIM) radio on an Android phone? The radio consumes a lot of power (30-70%), especially when the phone is idle. Sometimes I only need to use other functions (e.g., clock, ...