I'm currently looking for glue for the back of a Huawei P20 Pro. But I either only find overcharges or some on Ebay.
I already ordered one on Ebay, but it hardly stuck at all and the back came off easily despite being properly attached, so does anyone know where to buy this in good quality?
I have had good experience with adhesive tape, e.g. 3M 9448
With liquid glue it depends on what you glue. You didn't describe that, so no one can really answer the question for you.
As what is:
Material A
Material B
And "plastic" is NOT a material but an umbrella term. PS, ABS can be glued very well, PC, PA, PVC, PE are very bad.