Image: Mark Johnston -

Disappearing airtime is not just a rumour, as tech website MyBroadband has discovered after running tests to establish if complaints about disappearing airtime was real.

They wrote: “What happened during the test truly surprised us. While the airtime balances on the Vodacom, Telkom, and Cell C SIMs remained the same throughout the test, the airtime balance on the MTN SIM steadily decreased.

“The MTN number also received daily SMSs from MTN warning that it was using out-of-bundle data – despite the mobile data option in Android being turned off.

“The data usage monitor on the smartphone further showed that 0 bytes of mobile data had been used in the last 30 days.

“The airtime balance on the MTN number exhibited strange behaviour, and would occasionally increase slightly before continuing to decrease.”

To read the full article and find out how MyBroadband ran the tests, click here.