If you’re thinking about picking up Sony’s new Xperia M4 Aqua, you’re going to want to invest in a microSD card to go with it. The midrange device has 8GB of internal storage, according to its spec sheet, but only 1.25GB of that is free when you take the device out of its box.

More than 4GB of the storage is taken up by the handset’s operating system, XperiaBlog found, while another 2GB is used by pre-installed applications. On an unlocked device with no carrier bloatware, this leaves around 1.25GB free — but it will be even less for those with carrier devices.

Not only are there 2GB of pre-installed apps — which include Facebook, Evernote, Dropbox, Skype, PlayStation, and Kobo Books — but the vast majority cannot be uninstalled without root access, and as things stand, there is no root method for this device.

Even with a microSD card, there’s only so much you can do. You can put as much music and as many movies as you can fit on expandable storage, but you’re limited when it comes to software. Some Android apps can be moved to an SD card, but not all of the data is transferred across.

“Therefore, in its current state, we see the ‘8GB’ Xperia M4 Aqua as crippled,” XperiaBlog says. “To get the most out of this handset, root is required (we know of no such working solutions right now). Users will need to install something like Link2SD to create the app partition on the SD card.”

If you play a lot of mobile games, then, you will need to take storage space into consideration if you’re considering the Xperia M4 Aqua. High-end titles like Grand Theft Auto: Vice City and FIFA 15 require more than 1GB of space each, which leaves hardly any room for other apps.