[Q] No service and changed IMEI number S3 - I9300
It's been a while since I last posted, but still understand protocol before starting a new thread.....I've searched many places for this answer and come up short because there's a mixture of issues, so here goes:
* Phone purchased second hand by bro-in-law, bought it already rooted, but on a BTU ROM. IMEI in About section is different to that which is displayed on the back of the cover.
He only knows how to message, browse and call, so he didn't check these details.
* Don't know the previous stock ROM(i.e., T-Mobile, Voda, 3G or BTU). It is currently on a ROM of I9300XXAELLA
and baseband of I9300XXBLFB
How I find out what the orginal firmware was?
* Phone worked fine for more than 4 months without any hiccups, but recently having signal issues(intermittent disconnections), even with different networks(sim cards). So can't be provider issue. Or can it? Tried the Vanir ROM, issue(s) still persists. Seems to me like a software issue as there's been no physical damage, but can't be sure.
* I can access the mobile network signal settings when the signal is functioning, but not when it goes off. Can't make any calls when this happens or send any messages. Toggling between Airplane modes does the trick on the odd occasion but quite often it won't make any difference, it seems to have a mind of its own.
I'm leaning towards a baseband issue or radio/modem, if these aren't the same things. I'd like to revert it back to stock to see if it that works, but I have no idea which firmware to use because I need a way to find out what would work best in this situation.
That's about all I can think of right now...oh and one more thing, there's nothing backed up i.e., EFS folder or IMEI because nothing came with the phone. If you need any more information, feel free to ask.
Thanks in advance