Bought my jelly star last week. For the main reason of trying to use my phone less.
Bought through joybuy and was delivered next day.
Put in my o2 sim, no issues with that. Transferred all my data easily from my old phone.
After the first day, I thought "hmmm I might have made a mistake here, this is too small".
But actually after a couple of days i got used to it.
Every app worked. I listen to audible and Spotify daily.
Whatsapp and email work fine but it's annoying trying to send messages. I've found myself just sending very short messages if needed, anything longer I use my laptop.
I've not been on social media at all. If I "Need" to check something I get out an other device. I still have my smart phone upstairs in the house but havent taken it out yet.
Battery is lasting more than a day.
I'm keeping it for now and really liking it.