Our cost estimates assume 400 voice minutes and 500 texts used per month. Those numbers fall roughly in the middle of usage data we saw from the Federal Communications Commission (PDF) and a 2013 PwC study (PDF), among other resources, but are above the much lower averages that CTIA reported for 2017 (187 voice minutes and 143 texts). Unlike postpaid services, many prepaid and resold services still limit your text messages and phone calls, so the actual cost of a particular carrier may be slightly more or less if you use more or fewer minutes and texts, respectively.

You can also purchase an international SIM card that can be used in many different countries. This is a good bet for multi-country trips or for travelers who travel regularly to many different regions around the world. However, the option of replacing the SIM card is only available on unlocked phones. Ask your phone company if your phone’s SIM card can be unlocked.

T-Mobile has carved a niche for itself in the U.S. with their all-in pricing (i.e. taxes and fees baked into plan costs). The carrier's straightforward lineup of unlimited offerings have proven eminently popular and shepherded in the "unlimited revolution," as other carriers have sought to imitate T-Mobile's success. The carrier's ONE plans are still some of our favorite unlimited plans on the market, packed with tons of features and reasonably priced. 

Although OnePlus is still relatively new in the market and even unknown to some, their devices are typically high-spec and come at a low cost which makes them ideal for traveling. Unlike previous OnePlus handsets, the 3T is actually pretty easy to hold. You can now purchase it directly from the company without having to jump through hoops as you did with the older handsets.

Perhaps most impressive are Verizon’s data speeds. Verizon is on the forefront of new technology; it’s one of the first providers to adopt new 5G technology, which promises speeds in the 200 Mbps to 300 Mbps range. While this figure has yet to be corroborated by long-term experience in the real world, it’s safe to say it will mark a considerable step up from the 4G LTE network’s peak download speeds of 50 Mbps. Verizon claims that this technology works by combining multiple wireless connections together to create what amounts to a bigger, stronger channel piping data straight to your phone.
Keyboard and interface refers to the style of the screen and keyboard of the phone. On some phones, you use the number keys to type text messages. On some phones, you get a flip keyboard that looks like a standard keyboard. Some phones have touch screens with a display of a keyboard that you use right on the screen. A 4 inch or bigger display refers to the size of the screen. Most phones with 4 inch or bigger display screens are usually touch screen phones.
Since any information I accrue during my travels is backed up the second I hook up my phone to my computer using iTunes, saving me both time and effort. Although international plans are now readily available through most carriers, there are SIM cards available abroad that I can pop into my phone for the duration of my trip, and even if those sim cards aren’t available immediately, there’re hotspots around that will allow me to have immediate use of Wi-Fi.
Other International Cell Phones DO NOT give the same crystal-clear call quality that the World Talk & Text Phone gives you! That's because the World Talk & Text Phone automatically uses whichever foreign network in the area has the strongest signal. You therefore get the best call quality available to humankind, wherever you travel, GUARANTEED. Amazingly, you get better coverage than most of the locals get! (How unfair!)
Our estimates included only sales and discounts without expiration dates (though we included plans with “for a limited time” vagueness) and that are open to any customer (those that require trading in a phone or porting over a number didn’t qualify). If a plan offers a lower rate for automatic payments, we factored that discount in. We also allowed for regular purchases of an extra data pack or per-megabyte overage fees of $15 a gigabyte or less, but only up to $30 a month.
Usually, unlocked cell phones have the carrier's branding on the device. To test whether your phone is locked, insert a Telestial SIM Card or a SIM Card provided by a different carrier (than that of your device). If your device connects to a network and you are able to use the service, your phone is not locked. If your device does not connect to a network or you are unable to use the service, your phone may be locked.
OpenSignal’s network tests rely on crowdsourcing: Anyone can download the OpenSignal app and run tests. But that also means anyone can opt not to do so—and the majority of people don’t. As such, OpenSignal’s data skews heavily toward densely populated, urban areas. The upside is that in those regions, it has block-by-block information. If you live in a city, you can use OpenSignal’s data to check all the spots you frequent.
For each service, we computed the cost of a few typical bundles of smartphone service, setting minimal use at 1 gigabyte (GB) of data, moderate use at 3 GB, and heavy use at 5 GB. (Research firms’ estimates have shown steady increases in average use since the first version of this guide, but usage estimates per carrier have also diverged as some carriers have switched to selling only unlimited-data subscriptions: In the second quarter of 2018, Strategy Analytics found that Android users who had opted into its survey used on average 5.9 GB on T-Mobile, 5 GB on Sprint, 4.5 GB on Verizon, and 3.9 GB on AT&T. However, usage outside of the big four can be lower, to judge from the much lower monthly average reported by the wireless trade group CTIA for 2017: only 1.3 GB.

With Verizon’s TravelPass you can use your plan in Mexico and Canada for $5 per day. The charge jumps to $10 per day for use in other countries. Usage in Canada and Mexico are included in Verizon’s Go Unlimited, Beyond Unlimited and Above Unlimited plans at no additional charge. Verizon’s Above Unlimited plan includes five TravelPasses each month, good in more than 130 countries. The carrier also offers monthly and pay-as-you-go international roaming prices.
Right out of the gate there are some restrictions including limited streaming for gaming at 8Mbps and music streaming is limited to 1.5Mbps, but if you can handle those limitations, the Sprint plan is hard to beat on a nationwide network. The good news is that while you might have some data restrictions, you’ll also find unlimited calling, text, and data in Mexico and Canada as well as the United States.

Buying a cheap prepaid phone when you get off the plane can often be much more cost-effective than using your usual plan abroad. Or, you can call your carrier and ask whether your phone is compatible with international SIM cards. If so, you can buy a prepaid SIM in your destination country and simply pop it into your phone for access to the local network.
What: Save $200 off a new Samsung Galaxy Note9 PLUS switch to Verizon Wireless from another carrier, trade in an eligible phone and get up to an additional $300 off. If you're already a Verizon customer, you can also get this $300 off deal by adding a new line and trading in a phone. To get this discount, you'll need to trade in an eligible phone within 30 days of buying the phone. Your $300 will be credited to your monthly bill over 24 months.