Yes, you will have a signal at almost every camp but not everywhere. You may experience some poor connections in other areas. Though the network coverage has been improving.
But to be true, don't expect the signal to be strong as it comes back home. A quick option is to find a local operator's SIM card for internet service since there is no wi-fi on the mountain.
You can arrange in advance with our team if your need for internet service is so important.