Sudden increase in data usage

[radfan87]

massive increase in Data use in 1 month on Samsung phone, 2.7Gb total for 7 months then 4GB last month and 2 GB last 6 days, no change in its use so what is happening?

[cf4 · Accepted solution]

Have you checked the local data usage meter on the phone? This will show a graph of usage and the usage per device.

Settings > Connections > Data Usage > Mobile Data Usage