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Does anyone have a guide to changing the iPhone 5s U2 A1610A3 Tristar ? thanks

There are ton of videos showing how to replace a Tristar CI (U2) on the iPhone 5S. Start with the following channels: iPad Rehab (Jessa) https://www.youtube.com/channel/UCPjp41q...STS Telecom (Jason) https://www.youtube.com/channel/UC39yMXO… Both of these channels are excellent and more pedagogical in nature. They will walk you through the process and explain why they are doing what they are doing.

Hi Tracey, Here is a youtube link I hope this helps: https://www.youtube.com/watch?v=LuPK8ady