16 February 2019

iPhone 7 / 7 Plus No Service Problem

We repaired so many iPhone 7 and iPhone 7 Plus that having No Service problem.

iPhone 7 Plus No Service
If you try to restore it, you will end up like this. Unable to activate the iPhone.
When you stuck in this menu,
Click the "!" exclamation mark at the bottom right.
You can see there is only Serial Number and No IMEI. Then it's confirmed you have a hardware problem.

This problem we called it "baseband" problem

Baseband iPhone 7
The same iPhone above is repaired.
A healthy working iPhone would be like this. MEID, SN, and IMEI.

Why can't activate?
Because Apple needs to verify is the device Serial Number, and IMEI number match with their server or not. Server won't let you activate if the S/N or IMEI missing or not match with their list.

Why No Service?
It is a motherboard issue that one of chipset called Baseband is not working.

Why baseband is not working?
Baseband power circuit shorted due to water damaged.
Solder joint broken caused by heavy drop but the 
problem won't occur immediately, usually happen later.
The red circle is Baseband ic. To repair this, the technician must be very well trained. If not, they'll accidentally kill the A10 CPU which is next on it. Overheated and causing unable to power on.
 Solution and price?
Sorry, we need to open up and check before repair or quote you a price. Because it can be many reasons causing baseband failure.
  • Some just need reball and rebuild the broken tracks/pads.
  • Some are shorted BB PMU (baseband power ic) or components around it. 
  • Some are because some shop attempted to repair another problem but created this problem. We need to fix their mess.
So the price varies. We need to check first.

Last year I wrote an article about this repair.

Click here to inquiry. 

LINK: Full article about Baseband Repair iPhone 7