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JT (Jersey Telecom) and travel eSIM in Guernsey

JT (Jersey Telecom) is one of the networks your eSIM may use in Guernsey. Here is who actually decides which network you get, and what to do with that.

Author: Porsch Kunnipat Siramanakul · Co-founderReviewed by: Bob Kanokphon ThongdeePublished: October 12, 2026Last updated: October 12, 2026
JT (Jersey Telecom) and travel eSIM in Guernsey

Quick answer

  • 11 of the 16 Guernsey plans we sell name JT (Jersey Telecom) as a reachable network, at 4G and 5G.
  • JT runs LTE on B20, B3, B7 and 5G on n28, n78; your phone needs at least one of them.
  • Travel plans connect by roaming, so no plan can promise one specific network.

JT (Jersey Telecom) in brief

JT says its 5G Standalone network is live in Jersey and is being rolled out in Guernsey.

We are not a reseller for this operator and we have not run our own field speed tests. The band and network details below come from the sources listed at the end of the page.
JT (Jersey Telecom) and travel eSIM in Guernsey

JT's bands and technology

ItemJT
LTE (4G)B20, B3, B7
5G NRn28, n78
5G launchedLive
Network code (MCC-MNC)234-50

Checked against the sources on 2026-10-12. Only the bands a source confirmed are listed; the network may run others too.

An eSIM can only use JT if your phone supports at least one band in this table. Before you fly, open your model's spec page on the maker's site and compare its LTE and 5G band lists.

JT's coverage map

JT publishes its own coverage map. Look up the street or district you will stay in rather than the country as a whole, because coverage in town and out of town differs a great deal. The map shows JT's own network; a roaming plan may not get every technology it shows.

Who licenses JT

Mobile networks in Guernsey are licensed, and their spectrum assigned, by the Channel Islands Competition and Regulatory Authorities (Guernsey Competition and Regulatory Authority) (CICRA). The bands above are the ones it allocates. A problem with the local network's own service goes to the operator first; a problem with your eSIM plan comes to us.

JT (Jersey Telecom) and travel eSIM in Guernsey

The plans on our shelf that name JT (Jersey Telecom)

From the supplier record behind each package, 11 of the 16 plans we currently sell for Guernsey declare JT (Jersey Telecom) as a network the profile can reach, at 4G and 5G. The figure comes from the same catalogue that prices the plan pages, and it moves when the supplier revises the record.

A plan naming JT (Jersey Telecom) means the network sits in the list the profile may choose from. It does not mean your handset will stay on it. The priority order is the supplier's, and the signal where you stand decides.

JT beside the other networks in Guernsey

NetworkLTE bands5G bands
JT (Jersey Telecom)B20, B3, B7n28, n78
SureB20, B3, B7Not verified

A band shared across networks is one a single phone can use on all of them.

Why plans do not name a fixed network

Nearly every travel eSIM is a roaming product: the profile picks a network by an order the supplier sets, not by the buyer. If JT (Jersey Telecom) is weak where you are, try selecting Sure manually in the network settings, and keep data roaming on for the eSIM profile.

FAQ

Will my eSIM definitely connect to JT (Jersey Telecom)?+

11 of our plans name JT (Jersey Telecom) as reachable, but that is not a guarantee. Travel plans run over roaming agreements, so the network depends on the supplier behind the plan, your device and where you are.

Which bands does my phone need for JT?+

At least one of these, LTE: B20, B3, B7; 5G: n28, n78. Your phone's band list is on the maker's spec page for your model, under "Cellular" or "Network".

Does JT (Jersey Telecom) run 5G, and will my plan get it?+

Yes. JT has run commercial 5G, on n28, n78. A travel plan only gets it when the plan permits 5G, your phone supports one of those bands, and you are inside 5G coverage. Miss any one and you fall back to 4G.

How do I see which network I am on?+

Check the carrier name at the top of the screen, or open the mobile-network settings and look at the operator list. If signal is poor, try selecting a network manually instead of automatic, but only one your plan actually supports.

Sources

About the author

Porsch Kunnipat Siramanakul

Porsch Kunnipat Siramanakul

  • Co-founder of eSIMonline.asia
  • Digital marketer
  • Performance marketing and marketing planning
Meet the foundersLinkedIn
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