I’ve used my Anker PowerWave 7.5 with my iPhone X for years. I just got an iPhone 12 Pro and if I place it on the PowerWave, the phone recognizes the charger briefly (I see the lightning bolt over the battery symbol in the upper right) but then stops and the blue status light on the PowerWave starts flashing slowly.
The phone does not charge at this point. Is the PowerWave compatible with the iPhone 12 Pro?
NO!!! I am so peeved. I have 3 PowerWave units around my house, model #2522. None of them work with either of our iPhone 12 Pros. They do exactly what you describe. The blue light on the Anker comes on, the phone’s battery charging indicator turns green in the upper right. About 3 seconds later, the phone indicates it is no longer charging (the battery icon returns to white) and the blue light on the PowerWave flashes.
It DOES however charge properly when horizontal. By I never use it that way. when placed vertically, it fails as described above.
Anker: You need to address this please ASAP. This is a revolting experience since getting my Iphone 12. All of your products that I have purchased do not work with it.
I thought it could, this is a weird issue. Did you try a different charging brick just to make sure the issue was the actual pad and not something else?
Have you spoken to Apple and asked them if they are going to change their new design to work with your existing charger @Chilla_Manilla ?
So is the Powerwave 7.5 a horizontal pad or a sloped stand? Please quote product code as the Anker product names are confusing vague.
The pad
Anker PowerWave 7.5 Fast Wireless Charging Pad with Internal Cooling Fan
Or the PowerWave 7.5 Stand
The Stand would be device specific as the Qi transmitter has to align with the Qi receiver in the phone, so different phones won’t work the same. The Pad should work as you just align it til it works.
Stand, try phone in different orientations, seek out alignment.
If it works but awkwardly, then Apple have changed their design to move the Qi receiver to an awkward location.
I doubt Apple is going to change their $1000 phones to match my $50 charger made by a different company! 
It’s the PowerWave 7.5 Stand.
Theory - It’s a placement issue most likely. Apple changed their design, moved the placement of the Qi receiver within relative to the bottom of the phone, so the alignment went off.
Try tricks to move the placement, prop new phone up a little, or operate on its side or upside down.
Once you tried these tricks, if it doesn’t work then the notion of placement is proved wrong, some other issue.
I know some Anker stands have 3 Qi transmitter rings to work over a broader range of phones, but without you listing the exact product code and then finding a corresponding teardown, can’t be sure.
Did Apple to do this deliberately to force new pads (from them) to be bought? For stands it’s the distance from the lower edge is critical, for pads its more of a CoG (Center of Gravity) issue.
Indeed not. The feeling i got from @Chilla_Manilla comment is that Anker is to blame 
Have a great weekend @shane19
OMG that’s what I should have done, ask Apple to adjust their MagSafe charger to make sure no third party products need tweaks haha. I’ll bet it’s Apple’s new MagSafe design. The maddening part is that Anker did not have a new version compatible with iPhone 12. I would have paid them more money to buy like 3 or 4 of them.
I tried propping up the iphone 12 with increasing quantities of post it notes under it to raise its coil. Same symptom. It only works in the horizontal orientation. Also of interest, the Iphone does not charge upside down (vertically) either on my model 2522. This is the product:
https://www.amazon.com/gp/product/B078TDLHY9/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Just so frustrating. New phone and now my phone is either not charging or it’s sideways and I can’t use it while on the stand 
It should work. Maybe you are not orienting the phone correctly on the charger. Make sure the center of the phone is centered on the charger.
At least it works horizontally 
Everyone, I can confirm landscape does work if you position correctly. Vertical also works if you prop the bottom by the width of about a pencil. I’d recommend cutting a section off one of those white pentel erasers and gluing it onto the bottom. Just did a full charge no problem.
Low tech cheap method worked in this situation. Apple must have moved the Qi receiver further down about that distance.
My only luck getting this to work vertically is propping the phone up by about TWO pencils. One or one and a half (I was layering post-it notes until I got it to work) didn’t work.
Once you know the optimal height, what about some sugru to make it semi permanent?
Anker can adapt to cover a wider range of iPhones from one base via having multiple Qi transmitters at different heights but at a cost.
From what I have seen in teardowns, apple has not moved the wireless charging coil, and the other charging stand I have still works. My working theory is that the new magnets for MagSafe are triggering the foreign object detection inside the charger. Propping it up or using it in landscape moves the magnets far enough away from the sensing circuitry. As an experiment, you can try slowing bringing the phone near the charger until it starts charging. If it doesn’t stop, slowly move the phone into its normal position and see if it continues to charge. If it does it probably means that the charger only checks at the beginning of charging (or once every few minutes) for foreign objects.
We are not alone. Here is a similar post in Apple Support forums:
https://discussions.apple.com/thread/251951346
If I place my iPhone 12 Pro on the charger, wait till it fails (iphone battery indicator goes back to white, blue light on Anker flashes), place it again, and then maybe a 3rd or 4th time, and a little to the left, it finally starts charging.
It’s just a jump to the left…
Magnets and AC don’t go well together. Been known about since 1825.
You can see the Qi transmitter and the magnets