Guide

Check Your Network

A two minute check before you order, so your phone connects the day it arrives.

2 min readThe Y2KPHONES teamUpdated November 2026

How to check

Four steps, two minutes

1Find the phone's bandsEvery product page lists the network bands the phone supports, in the specifications.

2Look up your carrierSearch for your carrier on frequencycheck.com to see which bands it uses where you live.

3Compare the two listsLook for two or more bands in common, ideally including your carrier's main 4G band.

4Still unsure? Ask your carrierYour carrier can confirm which bands it uses where you live, and whether a phone will connect.

What to look for

A good match, and one to avoid

Good to go

What a reliable match looks like

Covered:

Two or more bands match
For example, your carrier uses B1, B3, B7 and B20, and the phone supports B1, B3 and B20.
Covered:

Your carrier's main 4G band is included
This is the band your carrier relies on most, so it matters more than any other.
Covered:

Matched for your region
Carriers can use different bands in different areas, so check the bands used where you live.

Not enough

Worth checking again before you order

Not covered:

Only one band matches
For example, your carrier uses B1, B3, B7 and B20, but the phone only shares B3. Signal may be weak or missing in places.
Not covered:

The phone only uses 3G
Many countries have switched off 3G. A phone without 4G may not connect there.
Not covered:

Bands checked for another country
A match in one country does not guarantee a match in another.

Band examples are for illustration only. Always compare the bands listed on the phone you want with your own carrier.

Good to know

A few quick tips

Every phone is unlockedYou can use any SIM. The bands decide whether it connects.

Ask your carrierYour carrier can confirm in a minute whether a phone will connect on its network.

Travelling?Bands vary between countries. If you will use the phone abroad, check the bands there too.

Our network policy

We supply the phone, your carrier supplies the network

Y2KPHONES sells unlocked phones and hardware only. We do not run a mobile network, and we have no control over which bands a carrier uses.

The bands are listedEvery product page shows the bands the phone supports, so you can compare them with your carrier before you order.

Checking is the buyer's responsibilityCarriers choose their own bands and can change them, so please confirm the match for where you will use the phone.

Returns cover faultsA phone that cannot connect because the bands do not match is not faulty, so it is not covered by returns.

Questions

Network questions

Where do I find the bands for a phone?

In the specifications on every product page.

Is one matching band enough?

Usually not. One band can leave you with weak signal or no service in some areas, so look for two or more, including your carrier's main 4G band.

Do the phones come with a SIM card?

No. Every phone is unlocked and works with your own SIM card, as long as the bands match your carrier.

Who is responsible for checking compatibility?

Checking that a phone works on your network is the buyer's responsibility, and network compatibility is not covered by returns. Every listing shows the bands the phone supports, so please compare them with your carrier before you order.

Checked your bands?

Every listing shows the bands it supports, so you can compare before you order.

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