Dear M3's authorized repair partners,

Please be informed that M3 SM10LTE & SM15 KeyPCB version has been changed from v1.2 to v2.0 as of Oct. 2018.

When your customer reported similar issue(application turned off without apparent reason in low signal zone), the keypcb replacement with v2.0 is strongly recommended.

For more details, please see attachment.

Best regards,