Introdução
If you are looking to replace the motherboard of your ATT Trimline 210M, this guide will explain in detail how to do so yourself. Keep in mind through this process that the motherboard must be handled with care, as the wires attached to it help run the whole phone.
Ferramentas
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After unclipping the bottom half of the shell, pull upward from the position shown in the picture to detach the top half of the shell.
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Conclusão
To reassemble your device, follow these instructions in reverse order.