Methods of Operating a User Device in a User Device Group and Related User Devices and Control Servers

A first user device of a user device group including the first user device and a second user device that share a same service identifier for a communication service, the first user device comprising:

• a communication interface configured to provide communications over a network;
• a user interface configured to accept user input from a user of the first user device;
• and
• a processor coupled with the communication interface and the user interface, wherein the processor is configured to transmit communications through the communication interface to the network and to receive communications through the communication interface from the network, wherein the processor is configured to receive user input accepted through the user interface, and wherein the processor is configured to,
• accept user input at the first user device to activate an operation mode for the first user device;
• responsive to accepting the user input to activate the operation mode for the first user device, activate the operation mode at the first user device, and provide a prompt for user input regarding activation of the operation mode at the second user device of the user device group;
• accept user input to activate the operation mode at the second user device of the user device group;
• and
• transmit a notification for a control server that is remote from the first user device, the notification regarding activation indicating activation of the operation mode at the first user device and requesting activation of the operation mode at the second user device.

A method performed by a first user device configured for operation with respect to a communication network, the method comprising:

• receiving user input from a user of the first user device via a user interface of the first user device, the user input indicating activation of an operation mode at the first user device;
• activating the operation mode at the first user device, in response to the user input;
• and
• with respect to an additional user device that is included in a user device group with the first user device:
• prompting for further user input from the user, regarding activation of the operation mode for the additional user device;
• and
• responsive to the further user input indicating that the operation mode is to be activated for the additional user device, transmitting a notification to a control server of the communication network, requesting activation of the operation mode for the additional user device.