Mobile phone coverage on Kilimanjaro is generally inconsistent. However it is better on the lower slopes. As you climb higher, the network coverage may become spotty or non-existent.
There are several mobile network providers in Tanzania, and the coverage and signal strength may depend on which provider you are using. Some of the major network providers in Tanzania include Vodacom, Airtel, Tigo, and Halotel.
It is important to note that mobile network coverage on Kilimanjaro is not guaranteed, and it may be affected by various factors, such as weather conditions, mountain terrain, and the availability of cell towers. Therefore, it is advisable to check with your mobile network provider before your climb to ensure that your phone will work on the mountain and to consider bringing a satellite phone or other communication device as a backup.