So I’ve always somewhat relied on U.S. Cellular roaming with sprint ever since I became a sprint customer because U.S. Cellular sold their St. Louis market to sprint. So I went years meeting my allotted roaming data because we have a weekend place in a rural area only covered completely by U.S. Cellular. Then recently with the new LTE roaming agreement sprint and U.S. Cellular made I was so excited because it would be considered native roaming and I would have access to LTE data and no data caps. Once the roaming was implemented it worked the best (for a few months) I had ever experienced speeds were usable and my phone was on 3g 50% of the time and lte 50%. Now (within the last month or two)data seems to be useless. I can’t do anything but call and text and my phone hardly ever has usable data. My phone seems to never be on LTE anymore and on 3g and even 1x most the time. I thought maybe it could be the tower being overloaded but driving home from our place the experience doesnt change at allgoing from tower to tower. I thought maybe it was something to do with my device or account but we had relatives up recently using sprint and they have the same problem. Then I asked another family member who is a U.S. Cellular customer and lives in that general area if he has experienced slow data recently and he said no it has been working like it always has. So I have no idea why it’s happening. Anyone here have any idea why this is happening? Sorry for the long post I know it’s probably too much but I didn’t want to leave out any details.
I spent 3 weeks in the London area last summer for work. EE was far superior to the others in my experience. I was able to get a prepaid SIM for 30 Pounds which had unlimited calls, texts, and 18 GB of data which allowed mobile hotspots. It was perfect for connecting my work computer to since our jobsite had little/no internet. You also get automatic connections to wifi in the subways provided by mobile carriers.
If you do end up getting a sim while you are there, keep in mind that over there, different stores have very different promotions, even in the same city. I ended up being lucky and stumbling into this store which had the deal mentioned above: https://goo.gl/maps/TGCw1tkXpPF2
After seeing how great my EE service was, my coworker (who was paying $10/day for Verizon international roaming) decided to stop into a different store on the east side of the city looking for the same deal. We ended up going all the way across town to the same store I visited so he could get the same deal.
In summary, depending on how long you're visiting and what the purpose is (work/vacation), Sprint roaming could suffice. If you look for a local SIM, don't be afraid to stop into a couple different stores if you don't find a deal you like because your options WILL vary.