A method performed by a mobile device, wherein the mobile device hosts a vehicle-to-everything, V2X, application enabler, VAE, client, and messages targeted to a first geographical area (18-A) and messages targeted to a second geographical area (18-B) are vehicle-to-everything, V2X, messages; the method comprising: subscribing the VAE client to receive from a VAE server messages targeted to the first geographical area (18-A); and subscribing the VAE client to receive from the VAE server messages targeted to the second geographical area (18-B) such that the mobile device is simultaneously subscribed to receive messages targeted to the first geographical area (18-A) and to receive messages targeted to the second geographical area (18-B), wherein subscribing to receive messages targeted to the second geographical area (18-B) comprises, after subscribing to receive messages targeted to the first geographical area (18-A), subscribing to receive messages targeted to the second geographical area (18-B) while remaining subscribed to receive messages targeted to the first geographical area (18-A), wherein subscribing to receive messages targeted to the first geographical area (18-A) comprises transmitting, to the VAE server, a subscription request (26-A) requesting that the mobile device be subscribed to receive messages targeted to the first geographical area (18-A), and wherein subscribing to receive messages targeted to the second geographical area (18-B) comprises performing a procedure, wherein performing the procedure comprises: transmitting, to the the VAE server, as part of the procedure, another subscription request (26-B) requesting that the mobile device be subscribed to receive messages targeted to the second geographical area (18-B); and refraining from transmitting, to the VAE server, as part of the procedure, an unsubscription request requesting that the mobile device be unsubscribed from receiving messages targeted to the first geographical area (18-A). subscribing the VAE client to receive from a VAE server messages targeted to the first geographical area (18-A); and subscribing the VAE client to receive from the VAE server messages targeted to the second geographical area (18-B) such that the mobile device is simultaneously subscribed to receive messages targeted to the first geographical area (18-A) and to receive messages targeted to the second geographical area (18-B), wherein subscribing to receive messages targeted to the second geographical area (18-B) comprises, after subscribing to receive messages targeted to the first geographical area (18-A), subscribing to receive messages targeted to the second geographical area (18-B) while remaining subscribed to receive messages targeted to the first geographical area (18-A), wherein subscribing to receive messages targeted to the first geographical area (18-A) comprises transmitting, to the VAE server, a subscription request (26-A) requesting that the mobile device be subscribed to receive messages targeted to the first geographical area (18-A), and wherein subscribing to receive messages targeted to the second geographical area (18-B) comprises performing a procedure, wherein performing the procedure comprises: transmitting, to the the VAE server, as part of the procedure, another subscription request (26-B) requesting that the mobile device be subscribed to receive messages targeted to the second geographical area (18-B); and refraining from transmitting, to the VAE server, as part of the procedure, an unsubscription request requesting that the mobile device be unsubscribed from receiving messages targeted to the first geographical area (18-A). transmitting, to the the VAE server, as part of the procedure, another subscription request (26-B) requesting that the mobile device be subscribed to receive messages targeted to the second geographical area (18-B); and refraining from transmitting, to the VAE server, as part of the procedure, an unsubscription request requesting that the mobile device be unsubscribed from receiving messages targeted to the first geographical area (18-A).