Between the small plans and the unlimited ones sits a pair that most people skip past without reading. Eighteen gigabytes and twenty five gigabytes cover the ground where the majority of heavy phone users actually live, and right now the pricing between them is doing something strange enough to be worth explaining.
The Pair, Side by Side
Eighteen Gigabytes
Listed as the thirty three dollar High Data Plan and currently shown at seven dollars fifty, badged as a promotional price held for six months. Eighteen gigabytes is enough to stream music all day, navigate without thinking, and take video calls on the move, without the habit of hunting for wi-fi. The allowances match the rest of the range: unlimited nationwide talk and text, unlimited international talk and text to a hundred countries, data at up to 5G speeds.
Worth knowing. The gap between the standard price and the promotional one is the widest anywhere in the thirty day range, which is what makes this plan the odd one out rather than simply the middle option.
Twenty Five Gigabytes
Listed at thirty nine dollars and currently sold at thirty nine dollars, with no discount applied and no struck through price on the card. Seven more gigabytes than the plan below it, the same calling and texting, the same 5G. This is the largest capped allowance before the range moves to unlimited, and the one to take if you regularly finish a month with nothing left.
Worth knowing. Because the plan below is discounted and this one is not, the live gap between them is far wider than the four dollars that separates them at standard pricing.
There is a third plan worth naming here only to rule it out. The fifteen gigabyte option sits just below this pair at twenty nine dollars with no discount, which puts it above the eighteen gigabyte plan in price and below it in allowance while the promotion runs. It is the clearest example of why the live prices matter more than the ladder they are printed on.
Why the Prices Do Not Line Up
At standard pricing these two plans are four dollars apart, which is roughly what seven gigabytes ought to cost. At the prices showing today they are much further apart, because one carries a promotional rate and the other does not. That is a timing accident rather than a judgement about the plans, and it will close when the promotional period ends.
The practical consequence is that the smaller plan is currently better value per gigabyte by a wide margin, and anyone choosing between them on price alone should take the eighteen gigabyte prepaid phone plan and accept the lower ceiling. Anyone choosing on headroom should ignore the promotion entirely, because it ends and the allowance does not.
It is also worth separating the allowance from the speed. Both plans run at up to 5G, so the experience of using them is identical until the data runs out. What you are buying with the larger plan is not a faster phone but a later date in the month when the rationing starts.

Which One Fits Your Month
Look at what your current phone reports for the last three months rather than guessing. If the figure sits between twelve and sixteen gigabytes, eighteen gives you room without waste. If it regularly passes twenty, the larger plan is the one that stops you rationing in the last week. If it passes twenty five with any regularity, neither of these is your plan and the unlimited tiers are the honest answer.
Both run on thirty day terms, so the cost of guessing wrong is one month. Moving between them is a matter of buying the other SIM only plan at the next renewal rather than asking anyone’s permission.
Picking a Side
For most people the eighteen gigabyte plan is the right call while its promotional price holds, and the twenty five gigabyte data plan is the right call afterwards if the smaller allowance has been leaving you short. The decision is easier than it looks because the plans are identical apart from the number, and that number is the only thing you need to match to your own usage.
Once a discount lapses, every calculation above inverts. BlogsBuddy carries our tally of which reductions have finished. This pairing is stocked by Lyca Mobile.

