In a previous installment we seemed on the historical past of the reminiscence card. The microSD emerged because the clear victor, but it surely would possibly quickly observe MMC and Reminiscence Stick into the good past, a minimum of so far as smartphones are involved.
Nowadays a microSD slot is a uncommon sight. Even SIM playing cards are beginning to sweat as Apple is sticking with its eSIM-only method that began final yr. Sure, it’s solely within the US for now, however that appears extra due to restricted eSIM help by carriers globally than anything, Apple’s desire appears clear – no card slots! And sure, we all know that Apple wasn’t the primary to go eSIM-only, but it surely’s definitely probably the most influential firm to take action.
The long run now seems scary for individuals who love the utility of playing cards – altering telephones is so simple as coming out the SIM (no provider approval wanted like with eSIM) and shifting an enormous MP3 or FLAC assortment is as simple as getting the microSD out of a card reader and into the telephone.
However as soon as the longer term seemed vivid – SIM and microSD had been going to affix forces and be stronger collectively. That concept by no means took off, sadly. In the event you’re confused, we’re speaking in regards to the SuperSIM format.

SuperSIMs mixed SIM and microSD playing cards into one package deal
These emerged in 2020 in China and mixed the performance of each. Bodily, they had been the identical form as a microSD, nonetheless, they’d additional connectors that lined up excellent with the pins of a hybrid microSD/SIM tray.
This fashion individuals with telephones that had hybrid card trays didn’t have to decide on between additional storage and a second telephone line, they might have each. And at a low value too, a 32GB SuperSIM was CNY 100 (round $14 on the time), a 64GB card was CNY 200 (~$28), there 128GB playing cards too and afterward 256GB fashions as effectively.
They provided sequential switch speeds of 90MB/s reads and 60MB/s writes. Not as quick as a number of the finest microSD playing cards even in 2020, however not terrible both. After all, as soon as the usual was established, it might have been simple to extend storage capability and pace over time.

Moreover extending storage, these playing cards functioned as backups too and will assist when transferring to a brand new telephone – the carriers that supported the format launched an app that will retailer your handle ebook, photographs, apps and different information on the cardboard, able to be restored on a brand new telephone, all with out touching the cloud.
So far as we will inform, there was no digital connection between the SIM portion and the microSD portion of the cardboard, this was only a 2-in-1 package deal. And because it seems, some enterprising of us made their very own “SuperSIM” playing cards years earlier than carriers got here out with an official product.
Making a “SuperSIM” card at dwelling
They discovered that with the best mixture of chopping, sanding and gluing, you set a SIM on the again of a microSD in a means that each are accessible to the telephone. It was a fragile operation, however doable with primary instruments and a few braveness. You possibly can learn extra in regards to the do-it-yourself SuperSIM playing cards over on iNEWS.
The format by no means actually took off – for those who lookup “Tremendous SIM” in the present day, one can find quite a lot of common SIMs which are “tremendous” due to their prolonged roaming protection.
There’s additionally Huawei’s NM (“nano reminiscence”) card format, which went the opposite means – nanoSIM-shaped reminiscence playing cards. These had been launched with the Mate 20 collection after Huawei talked Toshiba into backing the format (they usually tried to get the blessing of the SD Alliance to make it a world commonplace).

Huawei and Toshiba’s NM card
The unique NM playing cards topped out at 256GB capability and that hasn’t modified 5 years later. The newest Mate 60 telephones nonetheless help NM, however no different maker adopted it in addition to Honor (however this was earlier than the cut up). Benchmarks of NM playing cards confirmed microSD-like efficiency.
In 2020 Lexar launched 64GB, 128GB and 256GB NM playing cards costing CNY 200, CNY 300 and CNY 600, respectively, making them pricier than SuperSIMs. Looking out locations like AliExpress exhibits that extra producers have began producing NM playing cards since then, however there are none over 256GB.

Lexar’s NM playing cards
Be aware that NM is a pure reminiscence card in contrast to SuperSIM. That implies that dual-card trays nonetheless make you select between extra reminiscence or a second telephone line. That’s most likely not why NM by no means caught on, although.
microSD playing cards are low cost and plentiful, nonetheless, quite a lot of makers desire charging patrons $100 additional to go from 128GB to 256GB. You may get a 2TB NVMe SSD for that sort of money, 128GB of flash reminiscence actually doesn’t price that a lot.
What do you suppose – was SuperSIM an excellent or a dumb concept? What about NM playing cards?
