[Q] Microphone delays several seconds when receiving a call. What can I do?

---

Hello! I am looking for advice on trying to solve a problem that has been occurring over and over again on my Xperia Play R800a. What happens is that when I attempt to answer a call, my phone will not let me speak for at least 10 seconds after I slide to answer. It shows that the call is active and I can hear the other person, but it’s like the microphone is not turned on. It’s intermittent, but once it happens it usually keeps happening until I restart my phone. Then it will come back at random.

It happens frequently enough that I am now considering drastic measures in order to try and fix it. When I first looked into this, it appeared to be a glitch in Gingerbread from some other posts I saw. I was originally planning on waiting for the Ice Cream Sandwich firmware in hopes that it would fix it. However, now that Sony has scrapped the Xperia Play version at the last minute and we don’t know what they have planned for it, I’m not quite sure what I should do.

I’ve tried Call Delay Patch, Dewonkificator, and lowering the oom value to -17 on the Keypad app. Nothing seems to work. The phone itself is a carrier unlocked (bootloader still locked) R800a from the Google I/O conference last year. It’s currently running the Generic North American 4.0.2.A.0.42 firmware with Android 2.3.4. I have also been using Titanium Backup to update the apps that have been updated directly into the ROM. I found this necessary thanks to just how little onboard storage the Play has.

So I’m trying to figure out what the next best course of action is. Has anyone else encountered this? If so, were you able to fix it and how? Should I try flashing a different firmware? If so, what would you recommend that would still allow me full use of the Gamepad and the ability to still access all the Sony stuff like PS Pocket, PS Store, and PS Suite?

Thanks in advance!

Could this be related to the baseband version? The one I have is -56, but I hear AT&T uses -36. If so, how would I go about flashing it?

I've had the same problems on two Sony Ericsson devices now.
First one was a Xperia Neo which I used for 7 months until the delay started to happen.
After a month of trying to fix it I got fed up and sent it in to a 3rd party warranty in which they just refunded what I paid so I bought
a Xperia Arc S and right off the bat I got the same problem.
I tried everything from deleting apps, hard resets, updating/trouble shooting on Sony PC Companion replacing SIM's and I even went and bought a Google Nexus which everything works great on.
Its now been sent out to Sony for Warranty Repair.