Best 128GB MicroSD Cards in 2026: 10 Ranked by Price per GB

This is the card to buy if you only want one answer. At £27.99 it sits in the middle of this list on price, but it is the only card here that combines every rating that matters: A2 for app performance, V30 for sustained video, U3 for speed class, and 190MB/s read with a stated 90MB/s write.

That write speed is the reason it beats cards costing £17 more. Most listings shout about read speed, which only affects how fast you copy files off the card, and quietly omit write speed, which is what determines whether a camera drops frames while recording 4K. Of the ten cards here, only four state a write figure at all, and this is the cheapest of them.

The A2 rating is the other differentiator. A1 covers basic app loading; A2 requires substantially higher random read and write performance, which is what you feel when apps installed on the card open and update. Combined with SanDisk QuickFlow Technology for offload speeds and RescuePro Deluxe file recovery software, it is a genuinely complete package. It is temperature-proof, waterproof, shockproof and X-ray-proof, and with 100,395 ratings behind a 4.7 average it is the second most reviewed card on this list. At £0.219 per gigabyte it is not the cheapest, but it is the best value once you account for what you actually get.

With 176,351 ratings, this is not just the most reviewed card in this ranking, it is one of the most reviewed products of any kind we have covered. That volume of feedback is worth something on its own: whatever failure modes this card has, they would have surfaced by now.

It is built for phones and tablets rather than cameras, and the specification reflects that honestly. The A1 rating optimises it for app loading and general Android use, transfer speeds reach 140MB/s, and it carries Class 10 and U1 ratings which cover Full HD video comfortably. What it does not carry is U3 or V30, so it is not the card for sustained 4K recording, and no write speed is published.

SanDisk's Memory Zone app is a genuine convenience if you are using it in an Android phone, letting you browse files, back up automatically and move content off internal storage to free up space, without a computer. At £22.99, or £0.180 per gigabyte, it is the cheapest card here from a major brand, and for the very common job of simply giving a phone more room it does everything needed. Step up to the Extreme above only if you also shoot video.

If you are buying for a camera rather than a phone, this is the card to look at. Its 130MB/s write speed is the joint fastest on this list, and write speed is the specification that decides whether a camera can keep recording 4K without dropping frames or stalling. Read speed of 200MB/s is also near the top here, so offloading footage afterwards is quick.

Samsung positions it for drones, action cameras, 360° cameras and phones, and backs it with six-way protection: waterproof, temperature-resistant, X-ray-proof, magnet-resistant, drop-proof and wear-free. An SD adapter is included for camera bodies and card readers that take full-size cards.

At £46.96 it is the second most expensive card here, working out at £0.367 per gigabyte — more than double the Integral further down. That premium is defensible if you shoot video, and hard to justify if you do not. Worth noting for anyone comparing Samsung's range: this card is faster than the EVO Select at the bottom of this list while costing £18 less, so read the model name carefully rather than assuming a higher price means a better card.

At £17.81 this is the cheapest card in the ranking and works out at £0.139 per gigabyte, roughly a third of what the Samsung EVO Select costs for exactly the same storage. What makes it more than just cheap is that it does not cut the specifications that matter most.

It is rated UHS-I, U3 and Class 10, which covers 4K UHD recording, and unlike most cards here it publishes both figures: 100MB/s read and 50MB/s write. That write speed is modest next to the Samsung PRO cards, but it is real and stated, and it is enough for 4K at standard bitrates. The A1 rating covers app performance for phone use.

Integral is not a household name in the UK the way SanDisk and Samsung are, but the company has sold over 50 million memory cards, and the 55,068 ratings here are the third largest sample on this list — more than every Samsung card combined. It is water-resistant, shock-proof, temperature-resistant and X-ray-proof like the pricier options. If your priority is maximum storage for minimum money and you are not shooting professional video, this is the rational choice.

The PRO Plus sits just below the PRO Ultimate in Samsung's range and undercuts it by £6.97 while matching its 130MB/s write speed. Read speed drops from 200MB/s to 180MB/s, which affects how quickly you copy files off the card and nothing else. For most people that is a sensible trade.

Its genuinely useful extra is in the box: a USB 3.0 card reader is included. Every other card here either includes only an SD adapter or nothing at all, and a decent reader costs £8 to £15 separately — which effectively closes most of the price gap to the cheaper cards. If you regularly move footage to a laptop, that matters more than the 20MB/s of read speed you gave up.

Samsung quotes seven-fold protection here rather than the six on its other cards, adding shock-proofing to the usual list. One number in the listing needs a caveat: it claims 128GB gives up to 30 hours of 4K recording, while Samsung's own EVO Select listing says 128GB gives 7.5 hours. The 7.5-hour figure is the realistic one for 4K; the 30-hour claim appears to come from the 512GB variant.

This card exists to solve a problem the other nine do not address. A dash cam or security camera records in a continuous loop, overwriting the same card thousands of times, and a standard microSD card is not designed for that duty cycle. They fail — usually silently, so you only discover it when you need the footage.

SanDisk rates this one for up to 10,000 hours of Full HD recording, which is the endurance specification rather than a speed claim. It is built with the same environmental protection as the rest of the range — temperature-proof, waterproof, shockproof and X-ray-proof — and carries Class 10, U3 and V30 ratings, so it handles Full HD and 4K capture properly.

At £32.00 it costs more than the faster SanDisk Extreme at number one, and on paper it looks worse: 100MB/s read against 190MB/s. That comparison misses the point. You are not buying speed, you are buying the ability to survive being written to constantly for years. If the card is going into a phone or a camera you use occasionally, buy something else on this list. If it is going into a dash cam, buy this and do not think about it again.

On the one figure Lexar does publish, this card leads the list: 205MB/s read is the fastest here, ahead of the Samsung PRO Ultimate's 200MB/s and the SanDisk Extreme's 190MB/s. Its 4.7 average across 5,622 ratings is also among the stronger combinations of score and sample size in this ranking.

The difficulty is everything the listing leaves out. Unlike every other card here, it has no product description at all — just a handful of specification fields. There is no write speed, no A1 or A2 app performance rating, no U3 or V30 video speed class, and no durability claims. For a card that costs £44.99, or £0.351 per gigabyte, that is a lot of unanswered questions.

Read speed alone tells you how fast you can copy files off the card and nothing about whether it can sustain 4K recording or run apps well. Without a stated write speed or video speed class, it is impossible to recommend this over the SanDisk Extreme, which costs £17 less and publishes every one of those figures. If Lexar's specifications matter to you, check them on Lexar's own site before ordering rather than relying on this listing.

This is the awkward one. The Ultra Go costs exactly the same as the standard SanDisk Ultra at number two, £22.99, and is marginally faster on paper at 150MB/s read against 140MB/s. It also holds a slightly higher 4.7 average. On those numbers alone it looks like the better buy.

The catch is evidence. The standard Ultra has 176,351 ratings; this has 1,457. That is not a small difference in confidence, it is two orders of magnitude, and at an identical price there is no reason to take the less proven option for 10MB/s of read speed you will never notice.

The card itself is perfectly sensible for its intended job: expanding storage in Android phones, tablets, Chromebooks and Windows laptops, with the SanDisk Memory Zone app for organising photos and running automatic backups. SanDisk notes that the 150MB/s figure requires its own MobileMate USB 3.0 reader, sold separately, which is a caveat worth knowing before you assume you will see that speed. Like the standard Ultra, no write speed, U3 or V30 rating is published, so it is a phone card rather than a camera card.

There is nothing wrong with the EVO Plus. It is UHS-I U3 rated with 160MB/s transfer speed, suitable for 4K UHD and super slow motion recording, and it carries Samsung's six-way protection: waterproof, temperature-resistant, X-ray-proof, magnet-resistant, drop-proof and wear-free. An SD adapter is included and the 4.7 average is as high as anything here.

The problem is where it sits. At £42.37 it costs £14 more than the SanDisk Extreme at number one, which is faster on read, publishes a write speed the EVO Plus does not, and adds A2 app performance. It also costs £2.38 more than Samsung's own PRO Plus, which is faster on both read and write and throws in a USB card reader. Whichever direction you look, something on this list does the same job better for similar money.

Its 1,517 ratings are also among the smallest samples here. One thing to watch in the listing: it references storage up to 512GB and a 207,159-photo capacity, both of which describe the larger cards in the family rather than this 128GB model — a common pattern in Samsung's listings, and a reason to read the figures against the capacity you are actually buying.