3. Product code change succeeds:
Note:
Phone will show: "contact service" after above operations in some scenario of memory
content has been corrupted.
In this case, RF and EM tuning can recover the phone to normal mode.
Pls refer to the instruction of tunings in this manual.
Page 3 – 46
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RM-839; RM-840; RM-841
BB Troubleshooting and Manual Tuning Guide
Issue 1