Apple’s iMessage service is proprietary to Apple devices and can’t be offered on any other devices. We recommend disabling iMessage if you are swapping SIMS between an iPhone and the Light Phone.
When someone sends you an iMessage while your primary SIM card is in your Light Phone, it will need to send a ‘green’ text bubble, going through your carrier and therefore to your Light Phone II.
How to Disable iMessage before Swapping SIMs:
With the SIM in your iPhone, disable iMessage for the phone number using the settings. Then remove the SIM card. Power off your Light II and put in the SIM card. Then power the Light Phone back on. You may also need to make sure the phone number is not active on iMessage on any tablet or computer.