Most new car manufacturers' e-SIMs are directly soldered onto the T-Box motherboard (surface-mounted) and cannot be removed and replaced like a phone. Unauthorized desoldering of the motherboard may cause complete communication failure in the vehicle, and we strictly prohibit this operation.

Currently, in most developing countries, there is a severe lack of deep repair capabilities for the three electric systems. We recommend that B2B car dealers must have basic electrical insulation testing capabilities.

Almost all compliant models with hidden door handles have a mechanical emergency pull cable designed inside the car or under the vehicle. If the target country's climate is extreme, we will record a practical emergency door opening tutorial video for you before shipping.