How a plan is classed
OpenStream calls a plan prepaid only when the brand's own card states a recharge period, long expiry when that period is 180 days or more, postpaid when the card prices a month, and data-only when the page sells it as data with no voice service; a brand's reputation is not evidence, so a plan whose page states none of those is left unclassed. A plan sold per recharge is priced per 30 days for comparison, with the price as sold beside it.
What the basis changes
A 28-day recharge is paid 13 times a year, a monthly plan 12 times; Yomojo 29GB comes to $303 over a year of recharges. The rows show both figures so the comparison is on one basis.
Choosing
Compare the two cheapest rows at the allowance you use, on the per-30-day figure; the mobile check does that from the gigabytes and the price on your current plan, and every row hands off to the brand's own page.
Questions this guide answers
What is the cheapest prepaid mobile plan?
Yomojo 29GB at $24.90 per 30-day recharge, $24.90 per 30 days, 29GB, read 8 November 2026.
What is the cheapest monthly SIM-only plan?
Pivotel 25GB at $22.90 a month ongoing ($11.45 a month for the first 6 months), 25GB, read 8 November 2026.
How does a 28-day recharge compare with a monthly price?
OpenStream scales a recharge to 30 days, so a 28-day price is multiplied by 30/28 for the comparison and the price as sold is shown beside it.