The most common issue seen on the iPhone 6 Plus and sometimes the iPhone 6 is touch disease. This fault is caused by flexion of the logic board which breaks connections under the touch IC.
The most common symptoms of this fault are:
- Unresponsive touch screen.
- Grey bars at the top of the screen.
- Touch screen freezing.
- Having to bend the phone for the touch screen to work.
This fault is caused by poor design by apple and flexion of the motherboard over time, it can also be caused by bad drops and bending of the phones rear housing. On the iPhone 6 Plus the housing of the phone is weak and can bend very easily, every movement in the housing passes through to the motherboard and over time traces within the motherboard break. In this instance the trace leading to the M1 pad under the touch ic in the phone breaks and causes touch disease, when the phone is bent in a certain way the connection is restored and this is why the issue can be intermittent.
At microsoldering repairs we are able to remove the touch ic, run a jumper to repair the broken trace and restore the connection to the M1 pad, then reball the ic and re attach it resolving the issue and restoring touch functionality.
This repair is future proof as the jumper put in place is stronger and less vulnerable than the original trace, meaning further flexion of the motherboard will not cause the connection to break again.
We repair a lot of this fault, along with other common issues such as audio ic on the iPhone 7, Tristar replacements for charging issues and baseband repairs for no service or searching faults.
This week we received a phone from a customer that had brought it from another shop only 2 months ago fully working and within this time the wifi had stopped working.
The iphone 6 plus was in good condition. We tested the device to find that the wifi switch was greyed out and they were unable to actually switch on the wifi on the phone.
This is a common issue on iphones and is either caused by a faulty wifi IC or a bad connection underneath the IC.
Luckily the iphone 6 series wifi ic is changeable unlike newer models and does not require any reprogramming, which makes it a relatively easy job for us. We preheat the board to 160 degrees so that we are able to scrape away the underfill surrounding the chip. Once this is done we are able to apply heat to the chip to reflow the solder underneath. We then tested the device and saw that the wifi function had been restored but we did not stop here. We know that once this fault has developed, if not repaired properly it can come back after time. So we reheated and removed the chip. We then cleaned the pads on both the motherboard and the wifi IC, reballed the chip and then reflowed it back into place on the board. This restores the connections much better than simply reflowing the IC. this is a tried and tested method by ourselves and we have found it to last long term rather than it being a short term quick fix.
At Pratts pods and microsolderingrepairs.co.uk we take great pride in our work and always thrive to provide long lasting repairs rather than quick fixes and bodge jobs. We will never let a repair or device leave without us being 100% satisfied with its working condition. We have spent years developing our skills and techniques in microsoldering and are confident we can repair 90% of faults that may occur with your idevices.