Can I keep my current phone number?

Yes, most providers allow you to port your number, so you can keep your existing number when switching plans. If your current mobile number isn't registered under your name, you'll need to change ownership of your phone number first.

How long does it take to get a new SIM?

Delivery times vary: Some providers offer same-day delivery while others might take a few days. eSIMs can be activated immediately if your phone is compatible.

How fast are mobile internet speeds in the United States?

Your phone may connect to 4G LTE or 5G, depending on your device, your plan, and the network coverage in your area. Based on the latest national performance reports: T-Mobile currently leads the U.S. in 5G speed, with average download speeds around 220–300 Mbps in major metros. Verizon sits in the middle of the pack, typically reaching 150–200+ Mbps thanks to its growing 5G Ultra Wideband footprint. AT&T trails slightly behind for 5G speeds, averaging 110–150 Mbps across the country. For 4G LTE performance: All three major carriers generally deliver 25–50 Mbps download speeds on average, though speeds can be much higher in strong-coverage areas and slower in rural regions. Network & plan differences to keep in mind: Not every plan includes 5G, especially budget or prepaid options. Many "unlimited" plans may deprioritize speeds during congestion if you're on a low-tier plan or an MVNO. Some plans apply speed caps (for example, limiting 5G or hotspot speeds to 100–150 Mbps).

What if I want to use my mobile overseas?

It's usually better to pick up a local SIM because roaming can be an expensive option or excluded as a feature on some mobile plans. If you're going on a short trip or you just want to have access to your phone as soon as you land, it's good to look out for mobile plans that offer the ability to add on international roaming packs.

Marina Tatas, Writer at Finder

Marina Tatas

Writer

Marina Tatas was a shopping writer at Finder, covering everything you need to know about fashion, beauty, sneakers, home and wellbeing. You can find her words in publications including Marie Claire and Women's Health. She has a Bachelor of Communications, majoring in Journalism from the University of Technology Sydney.