Head to head

Cmobile vs Telstra

Cmobile is cheaper in year one at 4 of 5 data levels. Here's the cheapest plan on each for the data you use.

The short version

The widest gap is at 60GB a month: Cmobile is $528 cheaper than Telstra over the first year.
Cheapest way in: Cmobile 40GB at $420 for the first year, or Telstra Basic at $768 for the first year.
Best value per GB: Telstra Premium, about $0.33 a GB over the first year.
Cmobile sells 6 plans: postpaid, billed monthly.
Telstra sells 3 plans: postpaid, billed monthly.

Worth knowing

6 of Cmobile's 6 plans carry a note that a detail wasn't stated or couldn't be read (for example what happens when data runs out), so check the provider's page before you buy.
Price cliff: 1 of Telstra's 3 plans costs more in year two. Telstra Basic goes from $768 to $888.
Deal ending soon: Telstra Basic's deal ends on 2 November 2026.
When data runs out: Cmobile has plans where extra data is charged on top (not counted in our totals).

Cheapest plan on each provider at each data level
You use	Cmobile	Telstra
10GB a month	40GB$420 first year · $840 over twoCheaper	Basic$768 first year · $1,656 over two
30GB a month	40GB$420 first year · $840 over twoCheaper	Basic$768 first year · $1,656 over two
60GB a month	65GB$480 first year · $960 over twoCheaper	Essential$1,008 first year · $2,016 over two
100GB a month	100GB$540 first year · $1,080 over twoCheaper	Essential$1,008 first year · $2,016 over two
200GB a month	No plan with this much data	Premium$1,188 first year · $2,376 over twoOnly one

Compare with your own data

Network

Cmobile: uses the telstra network. Telstra: runs its own network. Both use the same Telstra towers, so coverage is the same; the differences are price, data and extras. Check coverage where you live and work: Cmobile map · Telstra map.

Cmobile vs Telstra

The short version

Worth knowing

Network

Other matchups