Looking for dumbphone suggestions (UK)

Hi all! I'm looking for recommendations good dumbphones, especially ones that are supported in the UK. Alternatively, I'm also looking for the opinions of any UK users on the Alt Mive Style Folder.

Like the many people who have come to this sub before me (probably), I've grown tired of this evil shitbox in my hands and, as you can imagine, have troubles with screen time and social media addiction. A beloved Australian friend of mine is starting the transition from a smartphone to a dumbphone, and our conversations have been really meaningful to me and are convincing me to make the change too. I want to be able to sack my current smartphone but have a dumbphone that meets my minimum requirements of being able to play music and have banking.

Could I just use a bunch of different apps and shit to make this phone a dumbphone? Sure! But honestly, I just really like the aesthetic of other dumbphones.

What I'm most interested in is a smart flip, here's a list of my must haves and would be nice's!

**Must haves:**

- send and receive texts

- make and receive phone calls (preferentially with no dropping, but not the end of the world if it does tbh)

- supported by O2's networks

- the ability to be able to download and run Spotify and Monzo

- enough Internet capability to use aforementioned apps

- Bluetooth or a headphone jack (headphone jack greatly preferred but Bluetooth works as well!)

**Not necessary:**

- Semi small (not necessary considering my top choice atm is the Mive, but a smaller size would probably be better)

- Able to hold a phone charm (because cute accessory)

- Has a t9 keyboard (highly HIGHLY preferred that it has one, though)

As mentioned previously, I'm currently looking at the Alt Mive Style Folder 1, as it's the one my friend currently owns and we've confirmed it would work on O2. I love the aesthetic of it, too! So if anyone else in the UK uses that specific model of phone, what's your experience like? Would you recommend it?

TIA for all your recommendations and reviews!! :)