MUNBYN has served more than 452,850 customers worldwide with reliable products and professional support from the tech team.
If you have any issues, please contact our engineers directly to get a prompt solution within 1 hour. MUNBYN support is available via phone, email, and remote desktop assistance.
Tel：+1 415 738 9812 8:00 - 17:00 (PT)
WhatsApp：+86 153 6009 8620 9:00 - 18:00 (UTC+8)
When contacting support, please offer the following information:
- Amazon order number of the unit
- Serial number of the unit
- PDA System Version number
Step：Setting >System > About phone >Build number
（This item is not required if the device is already unbootable）