phone: global samsung Note 2.3.6

Phone when has 3G or GSM/GPRS signal, this signal get lost(I can not receive/accept calls_phone needs reboot to find signal) when wifi get activated/deactivated... well?

I cleared all Apps caches and seems problem gone, hope not temporary...all ok now!

Good to see you figured it out!

phone: global samsung Note N7000 Android 2.3.6

I tried clear caches from all Apps, and problem gone.
But 1 or 2 times a month still happens again.
Well, the last time this happens cache existed only in Google Play and Yahoo Mail Apps.

Go and uninstall / reinstall Yahoo Mail?
Emails will gone from phone and new come in this case?

The final problem is:

phone work
make call
wifi connect - not too much from making call
disconnect wifi
phone work
repeat

problem case - 1st connect wifi prior make a call or sent sms
phone work
wifi connect
make call - can not, not work gsm
disconnect wifi
phone gsm not work till shutdown/restart