[General Questions and Answers] Lyon_:
Hi there,

First of all, sorry because English is not my mother tongue. I will try to explain my problem here as well as I can but I say sorry in advance for any error that I could make when writing this post here.

Few days ago I bought a Samsung Galaxy Note 9. I have barely used it but after few days I realised that nearly 50Gb (49.3 Gb) are already taken by "System/user data" according to what it is specified in the "Device care" storage options of the phone.

As I said, I have had no time to use the device yet apart from receiving a pair of calls with it and trying to install the F-Droid application. The day when I installed F-Droid I downloaded from there the Termux terminal to check if I could be able to check the F-Droid apk agaisnt the signature to verify the download.

One of the days I began to receive notifications to upload the system. I received many of these and I proceeded to allow all of them. There was a moment when I had the impression that the notifications were too many and when I began to read them carefully I noticed that some of them were similar to the previous ones. Notifications continued but I stopped to allow them. By then the display of the device has changed. I think this was due to the change from Android Oreo to Pie.

Some time after I realised about the problem that I mention here. I have not saved any content to the phone yet (no photos, no videos, even I have not set my email there yet).

I tried to reset the mobile to its factory settings. I had no worries of doing that because as I said I had nothing yet important on my phone. After trying that a pair of times the problem of the system storage was still there.

I have tried to use CCleaner and LTE CLeaner to solve this issue without any success. I have tried to dial *#9900# on the phone and then select from menu - "delete dumpstate/logcat" as proposed in Androidforums. I was able to perform this latter mentioned procedure but nothing changed (I have read that for some people is not possible to do this latter because their carriers do not allow them to use this option - *#9900#-)

The other solution that I read and that I have not tried yet is to root the phone and manually trying to find and delete the files which may be taking the storage, however I am hesitant to do so because I have no experience at all and it is a brand new and expensive phone as you know. I feel bad thinking about trying to root and solve this problem by myself and voiding completely my guarantee of the device.

I am still in the period of 15 days in which I can return the phone according the law for protecting customers of my country, however I am afraid that if I go back to the store from where I bought the device and ask there for a change to a new Note 9 they might tell me that everything is just my fault for having installed some apps from outside the Google and Samsung official apps stores.

Do you think I am already out of guarantee for just installing F-Droid and Termux?

Could you give me some advice about how to deal with this issue? Would be possible to avoid the rooting procedure to solve this problem?

Thank you very much for your help.