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Dear liske,
UMI has published a disassembly video of UMI Touch. That's not too difficult to remove the back cover but be careful, don't forget to pull out the SIM tray before starting your job.
https://youtu.be/owG8-tJeKjk
You even may rinse the removed back plate under tap water, just dry it carefully before reinstalling.
Sincerely,
Bence |
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