Aussies are prolific texters but the habit can get them into trouble, with a new report showing one in four have discovered their partner is cheating through a text message.

Telstra's State of the Nation Report canvassed 1,201 Australians in May this year on their mobile phone message behaviour and use.

It found four in 10 Australians send up to seven text messages a day, while one in three use texts to tell others about major events such as births or promotions.

But on the downside, one in four Aussies have found out their partner was cheating by reading a text, while a further 20 per cent had accidentally sent a text meant for their partner or lover to somebody else.

Social commentator Mark McCrindle said the report revealed the uptake and influence of mobile technology on Australians.

"It's no surprise that cheaters can often be caught out via texting, given that an affair is usually secretive," he said.