LTE, 4G, 5G, E: how to tell which network your phone is using

What each letter means

• 5G: the operator's 5G network is available and the phone can use it.
• 5G+, 5G UW, 5G UC or 5GA: names some operators give to their 5G, which Apple says can include a higher-frequency version.
• LTE: the operator's LTE network is available.
• 4G: on an iPhone, Apple says it means a 4G UMTS or LTE network, depending on the operator.
• 3G: an older UMTS or EV-DO network.
• E or G: EDGE or GPRS, the oldest data networks a phone can fall back to.

Samsung's list for Galaxy phones adds a few more from the same family, such as HSDPA and HSPA+, and a separate LTE icon for an LTE network that is part of a 5G network. It also notes that icons can look different depending on the operator and the model, so do not worry if yours is drawn slightly differently from a guide.

The icon shows what is available, not what you get

Apple is candid about this. It says the 5G icon appears based on how the operator configures its network and, in rare cases, may show even when 5G coverage is not available. Google says the same of Pixel phones: the 5G icon shows that you are in an area where 5G is available, not that you are actively receiving it.

So the letter and the experience can disagree in both directions. A 5G icon with one bar can be slower than LTE with full bars, because the strength of the signal and how busy the network is matter as much as the generation. On a trip, look at the bars first and the letters second. Whether you need 5G at all is covered in what 5G is and whether you need it.

Two lines, two rows, one way to tell them apart

On an iPhone with Dual SIM, Apple explains that the upper row of bars is the line used for mobile data and the lower row is your other line. With a travel eSIM set as the data line, the top row is the one that decides your internet. If a line has no signal at all, the row shows No Service instead of bars.

Open Control Center to see each row next to its label and operator name, which tells you at a glance which line has which network type. On Android, the network icons sit next to each SIM's bars, and Samsung notes that some indicators only appear when you pull down the notification panel.

Why it drops to 3G, E or G

• You are at the edge of coverage, inside a building, or the newer network does not reach where you are standing.
• The phone is set to avoid 5G. On a Pixel, Battery Saver turns 5G off; on an iPhone, the LTE option under Voice & Data keeps it on LTE.
• An older iPhone has LTE switched off. Apple asks owners of older models to turn on Enable LTE under Mobile Data Options.
• The network you are on only offers older technology in that area, and another operator would do better.

Where to change the network type: on an iPhone, Settings › Mobile Data › Mobile Data Options › Voice & Data, with 5G Auto, 5G On and LTE; on a Pixel, Settings › Network & internet › SIMs › the line › Preferred network type. Apple also notes that phones that support 5G are not affected when operators switch off 3G.

What to do with this on a trip

If the line shows LTE, 4G or 5G with bars and still nothing loads, the network type is not your problem. The usual causes are data roaming switched off for that line or the wrong line set for data, and the fixes are in the guide to an eSIM with no internet.

If you keep seeing E, G or 3G with pages that crawl, move towards a window or outside, turn airplane mode on and off so the phone searches again, and if that does not help, try another local operator from the list, as explained in manual or automatic network selection. Which network types a travel eSIM uses depends on the plan and on the local networks it connects to, so check the plan details before you go.