Using a screwdriver (hex T2), unscrew 2 bolts at the end of the phone.
Using the key tool, open the SIM card and Micro SD card trays and remove them.
Do not push too hard this may cause damage.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew 3 bolts and remove the brackets holding the connectors.
Disconnect the battery connector. The battery model of Huawei GR5 is HB396481ECW.
We strongly recommend disconnecting the connector to avoid a possible short circuit during disassembly.