2. Some E530 Phones might show the "Call Drop, No communication & Line disconnection" in bad electric field sometimes. The E530 users under low network signal could have the experience, abnormal call problems mentioned above.
Some internal noise in the phone under weak network signal might let the Hall IC work abnormally, so it's necessary to make it avoide and get enough duration from the noise interference.
3. Improvement : Additional Conducting TAPE
курите бюллетень. в кратком изложении, но повторяю это не панацея.