Time will say. Resetting network setting did nothing for my Mophie 3 in 1 charger.
Basically, my situation is:
- Mophie 3 in 1 stand, iPhone 12 Pro won't charge with Apple silicon case on it, it will charge without it. This charger used to charge iPhone XS with silicone case without any issues
- Logitech QI charger - no issues
- Samsung QI charger - no issues
It's hard to imagine hardware issue. If one Apple certified charger doesn't work properly anymore with MagSafe Phone / Case, I believe many other chargers using the similar coil alignment or charging chip may not work either, that's why the results are mixed across the board. For "stand" type chargers or the one where your phone is in fixed position, such issues can be more pronounced.
People talk about QI charging tech being old etc. It's old but Apple has changed charging design dramatically for 12, it literally added extra magnets, so it's not 1:1 comparison anymore.
I'll test my wife's phone on Mophie 3 in 1 charger once she gets to it and it may help isolate it better.
Anyway, if it's software - Apple will fix it. If it's defect on some units, Apple will replace the units. If it's a design flaw, may need to find the chargers that work for you.