The iPhone 6S has no service issue, but the signal of cellular is normal. We also try to solve it by rebooting iPhone or updating IOS, all is failed. So we suspect that this iPhone no service fault is caused by hardware damaged. Now, we need to use iPhone repair tools to fix it.
In general, there are two types of cell phone
faults that have no service.
1. signal receiving part;
2. signal transmitting part.
The iPhone 6s has no service with sim card but it shows operator in the setting, which indicating that there is no problem on the signal reception, so we judge the fault is on the signal transmitting part.
2. signal transmitting part.
The iPhone 6s has no service with sim card but it shows operator in the setting, which indicating that there is no problem on the signal reception, so we judge the fault is on the signal transmitting part.
The signal transmitting part is sent out from
the RF IC chip through the 2G amplifier chip and then through the iPhone antenna switch chip.
In iPhone repairs, the 2G power amplifier
failure probability is very high, so we replace the iPhone 6 2G amplifier
U2GPA_RF chip by QUICK 861DW hot rework
station and related professional repair tools, but the
same failure is still existing, it seems that the 2G amplifier has no problem.
Now we suspect that it is cuase by RF IC U_WTR_RF chip damaged. So we have to transfer previous judgement, and we need to replace the iPhone 6S radio frequency IC U _WTR_RF chip.
Now we suspect that it is cuase by RF IC U_WTR_RF chip damaged. So we have to transfer previous judgement, and we need to replace the iPhone 6S radio frequency IC U _WTR_RF chip.
After replacment, we install the iPhone and test it, the signal is back to normal, you can get the phone calls and messages smoothly.
No comments:
Post a Comment