I will admit I was skeptical at first. However, my Nexus 7's USB port was completely destroyed, it could barely hold the USB connector and couldn't charge or transmit data. (It's quite old and has heavy use). I was resigned to having to purchase and use a wireless charger for it, and the slow speed of charging that comes with it. Tech repairs UK were the ones I took a chance on, due to the good reviews. My nexus was sent, repaired, and returned to me WELL inside the delivery time, so I was very impressed. I've given it two weeks, testing the USB socket. It clicks in place with a solid, high quality sound that even the original lacked. Burst charging is back, transfer is back. Essentially, do what they ask (send it factory reset) and your repair should be as high quality, high speed, and returned well packaged as mine was. Great company... good prices, and I hope never have to use the guarantee, but it's nice to know it's there in case it suddenly breaks again (which I seriously doubt will be due to the quality repair)