Hello there guys,
So, inspired by the video that will be linked below, I will try to ditch a smartphone in a favor of an old, Nokia X2-01 phone:

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I will keep you updated with how the experiment is going and if this wonderful brand is yet obsolete.
Now, first impressions after getting back on that phone.
It's still far from obsolete. I've discovered that the GPRS network still works fine, and it somehow manages to work faster than the 3G on my older smartphones. I've discovered that the app store is pretty much obsolete since Nokia shut it down, however, it's replaced by an intergrated appstore of the Opera mobile browser, which comes as a default browser with the phone. There you can install any apps that Symbian supports. I've managed to successfully install Messenger and Facebook on it and it works relatively fine. I noticed that all the new features available in smartphones were ported to the Symbian versions as well. I guess that's because a lot of people in third world countries still use symbian phones due to their affordable pricing. Also, WhatsApp is also still available for this phone, it's that I don't use it so I didn't install it. No Skype for it, tho.
As I said, I am still astonished by how well the GPRS service still works in our country.
Now this is one of the reasons I loved Nokia phones - the music quality.
For such an old phone, it produces unbelievable music quality, especially if you use headphones. I was never able to get this kind of quality and bass out of any of the previous smartphones I owned. This is a great pro for me as when going for a run, music is my best friend. I had problems getting decent audio quality through my headphones when using my old Android device.
Messaging. Oh man I miss physical keyboards. As you see, this one has a full one. And the texting expierence is a lot better. I never got accustomed to the touch screen keyboards. Maybe because I grew up with an old Nokia X6 that was a touch screen phone, but it had the oldschool numerical keyboard when it came to texting.
The camera? Well, it has a 0.3 MP camera. It's a joke compared to todays standarts. You wouldn't do any professional photography with this thing. However, I find it that if you see something that you really need to take that pic of, the quality is still bearable. Here is my hipster food pic made with the phone:

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Battery life after so many years is still great. It was used by my mother before for like five years, and then laid in the closet untouched for another five. I took it out - fired it up, and it still has two bars of battery! That's Nokia phones for you! If only Nokia wouldn't have sold themselves out to Microsoft and decided to switch to Android...
Oh, this phone has a SD card slot. I can still use my 7GB music library in this , which is cool.
The particular reason why I decided to take part in this is because of reliability of the old phones when it comes to texting or making calls (even the most high end smartphone can start misbehaving when you really need to make that call) and a moral side. I am very saddened when during breaks in our school, most people are burried in their phone screens instead of socialising. Also, I've noticed just how much of the smartphone functionality I simply do not use..
So, I'll be using this for a while. If you got any questions, ask. I'll keep you updated on how it's going.
Oh, and if you're gonna start commenting smartass BS on how stupid this is and such, just stay away. If you have nothing constructive to add, keep it to yourself.
Now, the video I talked about.