The glue used for most modern phones is heat based and does not "cure". Reason for this is so that the phone can be opened for repair and finally for recycling.
If you ever watched a technician repair a new phone the first step involves heating it up with a hot air gun to loosen the glue and open the phone up.
If you ever watched a technician repair a new phone the first step involves heating it up with a hot air gun to loosen the glue and open the phone up.