[cbfan123]

I recall reading that if you put files on to the device memory that it would slow down the phone. To remedy this, the article suggested to put everything on an sd card instead and keep device memory clean. Does putting files on the phone really slow it down?

[Ecm]

Your z10 has a lot of storage, compared to older Blackberry devices. Even with a good number of apps, you'd probably have 8 or 9 GB left free. You can use most of that before you'll have issues.

That said, there are benefits to using an mSD card for storage. In case of issues with your devices, your photos music, documents are safer on a card. The cost of the mSD cards has come down, so you get more bang for your buck. If/when you change to a new device, you wouldn't have to transfer files from storage. Backup/restores can be a lot quicker as well.

[AfterHoursWelds]

I think it does because I have some good lag in between loading screens etc.

I also have my Z10 filled to the max, I can't figure out what I want to delete haha.

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[Chanlion]

No. Unless it reaches critical. Same way a PC works. It doesn't slow down until a critical point. It'll tell you.

Just keep less accessed files on a SD card.