Support for Smartphone MicroSD Card Slots is Dwindling and Here’s Why

As more smartphones enter the market, manufacturers have slowly started to scrape away one of the most crucial and coveted features in a handset; the microSD card slot.

There are two fundamental reasons why companies have started to do this; one focuses on their requirements of the consumer while the other focuses on generation of substantial revenue. Let us take a look at why smartphone manufacturers have slowly started to scrap away smartphone microSD card slots from their products.

They Slow Down the Overall Performance of the Smartphone

This statement is true to an extent and we will explain why. Several smartphones come with different internal capacity models and if they also feature support for microSD card slots, the choice is relatively easy for the consumer. They pick out the model that has the least amount of storage, and place in an external card. This way, the user gains access to more usable storage and saves money in the process. While this can be thought as a smart move on the consumer’s part, it is actually the complete opposite.

The internal flash memory of a smartphone is extremely durable and long lasting, which is the complete opposite case for a microSD card. The lower the flash memory count in a smartphone, the lower amount of performance you will end up getting, regardless if that phone boasts an octa-core processor and 4GB of RAM. This is because data is read and written from the internal storage, and as soon as that internal storage starts getting used up, it ends up degrading the performance of the smartphone.

The performance differences between a phone with 32GB of inbuilt storage and one with 16GB storage and a 16GB microSD card are significant

Here is another thing to notice about consumer behavior. When they do head out to purchase a microSD card, they will often pick out that particular one that features the highest amount of storage and carry the lowest price tag. Most users generally do not care about the maximum read and write speeds of the card and they believe that they have made a wise decision on their part.

Here is the truth. The cheaper a microSD card happens to be, the more prone it will be to data corruption. As stated earlier, internal memory is highly durable so chances of data corruption on it are non-existent. However, the consumer will obviously not agree and blame it on the smartphone manufacturer for being responsible for data corruption on the microSD card. If you do head out to purchase an external card for your smartphone, always remember that if you want to get the best combination of speed, life span, and storage, then you are going to have to spend slightly more than what you are used to, and that is picking out storage cards belonging to reliable brands such as Samsung, SanDisk and Transcend.

Kingston is also a reputable brand, but it sacrifices speed for price.

Smartphone Manufacturers Can Start Charging Premium Prices for Their Products

Smartphone manufacturers easily take advantage of this approach by charging consumers premium price and generate substantial amounts of revenue in the process. For example, the base model of an iPhone 6s is 16GB, and in order to purchase the 64GB model, you will have to spend $100 more just for that extra storage. Other models that come with 32GB of storage might be sufficient for some users, but there are those that like to carry around immense amounts of content in their handsets and for that, they require the extra storage.

While the consumer also needs to be educated that they cannot always choose to go down the inexpensive route, companies should also be reminded that their primary objective is to provide their clientele with a great product and not just to skim them of their hard earned money. According to Hugo Barra, the Vice President of Xiaomi, which happens to be the 3rd largest smartphone OEM in the world (with 35 million phones sold in 1st half of 2015):

For high performance devices, we are fundamentally against an SD card slot. You think you’re buying like a Kingston or a SanDisk but you’re actually not, and they’re extremely poor quality, they’re slow, they sometimes just stop working, and it gives people huge number of issues, apps crashing all the time, users losing data, a lot of basically complaints and customer frustration. It’s gonna be a while before you finally accept that maybe the reason why it’s not performing is because you put in an SD card, right? You’re gonna blame the phone, you’re gonna blame the manufacturer, you’re gonna shout and scream and try to get it fixed, so many different ways until you say, ‘Actually, let me just take the SD card out and see what happens.

This statement targets both the consumer as well as the financial interest of all smartphone manufacturers. So should you avoid going after a smartphone that offers you an option to expand your storage? Absolutely not, but you also have to make sure that when you do purchase a microSD card, you must invest a great deal in it, otherwise you will definitely regret it in the future.


  • Waqas Tariq

    I wholeheartedly agree, SD cards need to die for the smartphones, at-least until they come with an SD card that is of equal or more speed than that of the internal storage. Manufacturers need to make the cost of more storage cheaper than the almost standard $100

    • eyescreaman

      You can get decent speeds with UHS U1 versions of SD cards and even better with the ones rated UHS U3 for 4k video recording in your goPro etc.
      Here’s a test with the 64GB one I have:
      Silicon Power UHS I: Read: 88MB/s, Write: 26MB/

      • Waqas Tariq

        Well, the UFS has a tested speed of over 150MB write, so the card you are talking about will be more than 6 times slower.

      • Waqas Tariq

        Here is a read/write test from a Note 5 internal memory.

      • Noaman Ahmed

        okay…read and write speeds are good…but if you are comparing it with internal memory you need to start considering iops

    • Smokingaces

      This!

  • Lazy Sapper

    Use Class 10 SDHC and MicroSDHC cards only. The phone performance will be maintained. Plus, do not use them to install apps. Only store media and non-frequently used data in them.

  • Nabeel

    A very effective, usable, informative and good article on ProPakistani, after a long time.

  • Zafar Abbas Rizvi

    Although i am an android user but Steve Jobs never went wrong, was it about Flash player or micro sd card.
    I am using 16 GB card i bought from Noki Care against 2K. I am using it for 2 years and it never get corrupted.

    • Taha Najam

      Steve Jobs has been wrong more times than he’s right. Remember when he said that 3.5″ is just perfect size for a phone screen? Oh and that Apple will never release something with a stylus?

      • Zafar Abbas Rizvi

        Aesthetically he might be wrong for size or design. But technically He was mostly right. Even android asked you before installing 3rd party apps due to security reasons. Same goes for Flash and SD card slot. Now in android after flash top smartphone giants ignoring SD card slots due security issues and causing slowness of smartphone. S6 is example.

  • Guy Chauhan

    just a thought that smartphones should be upgraded in a way that they could reject substandard microSD cards so that people don’t go buy rajabazari shi* and put it in the smartphone. this’ll help in filtering out cheap stuff.

    • Haha

      pindi boy

    • eyescreaman

      This will not work in Pakistan as buying power is limited for the masses and some just want to have a good amount of stuff on their phones. If you are playing music or even low-bitrate HD video it works on low grade SD cards.

  • twister286

    The author thinks that high-speed cards don’t exist it seems.

    You can get high-speed cars such as Sandisk’s extreme pro series…they’re plenty fast for usage in cameras/phones for storing media.

    Even Class 10 cards (which are available much more commonly) are easily capable of handling 1080p video.

    Phone manufacturers are simply forcing people to buy more expensive storage, and taking away future scalability from the consumer to drive more sales. For example, I know that 16GB is too low, so I’m forced to buy a 32GB phone with a much higher price premium than buying a 16GB phone + 16GB card.

    Moreover, with a card-equipped phone I can upgrade the card if necessary…with other devices I’d have to buy a new phone outright. And in most countries, data speeds are not fast enough and neither do we have enough data on packages to make cloud storage of large files viable as yet.