! Next to mobile data icon
• If you access a network that cannot use actual mobile data, “!” is displayed next to mobile data icon.
• If APN is incorrectly set, such display may occur, so you need to check Settings >
Wireless & networks > More > Cellular networks > APN.
• If there is no problem with APN, mobile data usage may be disabled by service provider service,
so you need to contact the service provider. (used up limit, call restricted service, etc.)