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Can the iphone 5s drive 4G? How come?

Iphone 5s can drive 4G.

To open a 4G network, your SIM card must be 4G first.

To open a 4G network, your SIM card must be 4G, and the operator must upgrade to 15.6 or 15.7 (Settings-General-About this machine-Operator-Update), and then you can enable 4G on the cellular data side (Settings-Cellular data-Enable 4G) (as shown below).

1, sea setting-general.

2. Click about this machine.

3. Click the operator.

4. Click Update.

5. Then enable 4G on the cellular data side.