The Master hasn't been in the past few days so I'll try to answer your issue as best I can.
Usually, the phones are designed for a specific region/country. It's possible that your ROM was built for a different one. How sure are you that the ROM which you are replacing it with will work for you? (I assume that you have a backup and you know how to load ROMs) Also, you might want to try editing the build.prop it increase/maximize reception.
To be honest, this is actually a complicated approach. From what you said, it seems that you've made other troubleshooting steps on your own. Since you really did not mention all of them I'm basing my response on what you said.
Let's try to stick to the basics first. Why did you replace the microphone in the first place? If the same issue happens with 2 other phones from this type, I don't think the mic is the problem. Also, does this mean that you can hear them fine, but they have a hard time hearing you? Have you tried using the stock sound recorder on your phone? Is it also choppy? Have you tried using Skype? You don't really have to call anyone, you just need to make a test call.
When using the device as a phone (eg. making calls, sending SMS, MMS, or connecting to the internet using EDGE or 3G), you're actually relying mostly on your carrier/service provider. How many signal bars do you get? The easiest way to test signal related issues would be by using a different SIM or using a different phone. (When you try a different phone, I suggest using a GSM one - the ones that can only make calls or do SMS.) It's highly possible that there's already something wrong with your SIM.
---------- Post added at 01:17 AM ---------- Previous post was at 01:08 AM ----------
ElectronikHeart hasn't checked in the past few days, so I hope you don't mind me butting in.
When you say brick, does it mean that you don't even have recovery mode? If you don't, try to see if you can put CWM. Once successful, you can try to use the A7100 ROM if your original one was a mt6515_c910_ht_en_4.0_v01 rom using the update.zip
First, the microphone problem: I replaced the microphones, because I thought, (and others said as well,) that it will be a hardware problem. After the chane, there was some improvement with the sound, but the problem was not solved. That's why I think, it will be some ROM or software problem, and that is why I ask for help.
adb reboot recovery
Thank you for all your feedbacks !
So what I meant be "Non padded" is that the file was Hex edited so to end of the file (where nothing is) is cropped.
The recovery mode is not the Spreadtrum text utilities. Flashing the recovery will be at "Volume- + Power" I think where the old recovery was. It may be at home + power or something else, but it's most of the time at volume- + power".
You also can issue this in adb if nothing works:
adb reboot recovery
So it's upside down because every manufacturer are using different hardware for their phones.
This CWM image was done using an other kernel than the one in your phone, so your hardware is not fully understood by it.
It's not a big problem because CWM just have to use very basic and standard hardware.
I would really appreciate to have a copy of your full backup. You will also have to say what fdl files you used to make ResearchDownload work. This could help.
I succesfully rooted my phone :P
I used fdl files with C909 folder names (both from set 1 and set 3 worked well) i didn't try others.
only CWM SC8810 Non padded version worked (strange because i have sc6820 chip?)
I will post my flash in few hours. Which files do you need? Do you know the best site to upload my firmware for you?
hello friends I introduce myself, I'm Spanish caparrut, yesterday I put the rom in this forum
([ROM] Feiteng A7100 - Spreadtrum SC6820 - Rooted), and it works perfect, thanks, wanted
* know if you can put the recovery on this phone, if so how and where to get the
* recovery program and thanks.
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