Named O2 Store & Share, the service can be accessed on smartphones, tablets, PCs, and laptops and kicks off with free access to 8GB of storage.
Customers needing more space can rent a total of 32GB of space for just £2 a month or opt for unlimited space for £5 a month.
Nina Bibby, Marketing and Consumer Director at O2, said; “From pictures of family, to the songs they love, to the contact details of new friends – much of what is stored on your smartphone, tablet, PC, and laptop is irreplaceable.
“We are launching O2 Store & Share to offer our customers the peace of mind that we will protect the data they store, and that they will be able to access it wherever and whenever they choose.”