Now that someone mentioned about problems with QR codes, I checked mine & sure enough, didn't work earlier but worked now, after I play around with a non-stock camera app to open the lens first. Google Duo or similar video calling apps, however, are mostly fine for me. Again, if the camera hardware is totally broken or defective, then - everything would freeze entirely - I suppose, it can be described or considered partial failure.
In the 4 months owning this, I've lower the expectations on how the A5 Pro is going to perform vs. the advertised performance in marketing ... the various 4G/LTE bands are functional in my travel abroad, WiFi is acceptable (5 Ghz band is much faster, use it if you can - 2.4 Ghz is slow but not horrible). Battery will sometimes stop charging when it reached 95% - it could be an indirect result of which/how it is being charged. I can watch vidoes on YT Vanced at 480p and 780p just fine, sound is acceptable & not going to expect near Dolby-like output ... mail apps & web browsing using Chrome is good.
For about $70 USD (after a partial refund) - it's not bad as a spare device. If it is going to be one's primary and everyday smartphone, I suggest spending a little more on a better brand with solid tech support & after-sales customer services; and, stay AWAY from AliExpress.
P.S. I am still using my Huawei Honor 5X and Xiaomei A2 Lite global (2018-19 model) - both working flawlessly - on a custom Lineage ROM & stock "Pie" (A2 Lite) - dual sims but fewer radio bands for world-wide coverage.