Zim Connections Reviews 

I was travelling around Germany and was looking for an eSIM solution for data roaming, I found ZIM@SBB. Thinking when Swiss railroad would recommend that, it would work, but for my trip around Germany, mostly southly of Stuttgard, most of the time it did not. As I had a few 100MB data roaming left on another prepaid SIM, I had to switch back to that, and surprisingly, that worked most of the times when I needed Internet connections out of cities. I got back to the support. Of course, not really anything useful came back not even a goodwill refund. I'm done with ZIM connections, next time travelling I'll rather try any local (e)SIM solution.
Addendum in August: I have now switched to Saily eSIM and, after some initial difficulties, discovered that the APN was not set correctly in the Network Manager. These settings can be found on the Saily support pages, but nowhere on the ZIM website. I suspect that the connection problems I had in Germany at the time were also due to an incorrect APN configuration. When asked about this again, ZIM apparently does not feel it necessary to provide an answer. For me, ZIM is definitely not to recommend!
Addendum on 7.4.2026: They really do reply ‘quickly’ – I’m sorry, but I find that a bit ridiculous. I’ve already written at length about my experience and found a solution myself. I don’t think there’s anything left to discuss now; the opportunity was missed long ago.

Terrible, it’s hit and miss. Used because it’s cheaper. My mistake. Never answer messages when there are problems. App doesn’t work when offline or they are “improving” which happens a lot when you need to get on it for sim details. You should still be able to access the wallet for the sim details when offline or improving! Often sims don’t work or take forever to kick in.

Bought 2 esims and neither would connect to the network. Tried a different company (Airalo) and immediately worked. Tried to contact Zim by chat and email and received no response so would not use again.

Z esim is a total waste of money.
I tried it on two occasions, and in the both of them just failed to make use of them.
I will never pay for it ever again.

don’t use this service in turkiye after 1gb slow speeds that feels like you don’t have any internet at all there is no such a word unlimited paying £14 for nothing i could have bought physical sim with better network they using network called aveya poor

I have used many times and always perfect

I've been suffering a lot from roaming fees during previous my travels and I couldn't find any solution, not until I used ZIM! They have the best eSIM plans with low fees and an amazing support team that is always available