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I am wondering if the extra “length” to the bump has anything to do with wireless charging? One can hope, I guess
 
iPhone 6: 6.9 mm MAKE them 7.0 mm instead with a larger battery
iPhone 7: 7.1 mm MAKE them 7.2 mm instead with a larger battery
iPhone 8: 7.3 mm MAKE them 7.4 mm instead with a larger battery
iPhone X: 7.7 mm MAKE them 7.8 mm instead with a larger battery
iPhone Xr: 8.3 mm MAKE them 8.4 mm instead with a larger battery

If you think .1mm is going to add a huge amount of battery, you’re kidding yourself.
 
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