Manx Telecom says people across the Island could face data issues overnight as it upgrades its mobile coverage.
The company says Castletown, Ballasalla, Colby, Port St Mary, Santon, Kirk Michael, Ballaugh, Foxdale, Peel, Maughold, Ramsey, Sulby and Crosby could all face disruption.
It says between 10pm tonight and 6am tomorrow morning customers may experience reduced 4G coverage.
It apologises for any inconvenience caused.