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FAQ

Here is basic questions and answer about 4G/5G Bands and Combos website and data.

What 4G/5G Bands & CA Combos website and why it's exist?

Most of mobile device and modem vendors doesn't tell on their devices technical specification what 4G/5G Carrier Aggregation combination device support. Most of vendors only show in their technical specification 4G/LTE Category and single bands supports. Also most of devices have Carrier Policy what limits band / combo support in carrier level. This is why 4G/5G CA Combos website is exist to show data based of modem logs.

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How to you get this CA combo data?

Everyone can submit to us their devices UE Capability Information message what is most of accurate method see current network supported combos. This message 4G/5G modems will send to network when network request. Also we use other log files from modem. You can find instructions in contribute page.

What is Carrier Aggregation (CA)?

In 3GPP site have good explanation about Carrier Aggregation and here all 4G combinations listed from standards.

What is Dual Connectivity (EN-DC)?

Dual Connectivity is similar like Carrier Aggregation but between 4G and 5G. This used in current 5G NSA (Non-Standalone)-network. More information about Dual Connectivity here. Here is list of combinations from standard.

What is UE Category?

LTE UE Category defines maximum throughput for clients (UE). Here is good table of UE Categories .

How devices show when 4G Carrier Aggregation is active?

Devices may show this with 4G+ or LTE+ icon. Not every devices show special icon when 4G Carrier Aggregation is active. Some devices also have bug to show 4G+/LTE+ icon even not Aggrigate with other bands.

Is there any app show 4G Carrier Aggregation details?

There is few apps for Android show 4G Carrier Aggregation properly. Example Network Signal Guru for Qualcomm Android devices (Root required). Also for Samsung there is Service Mode (Dial to *#0011#).

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