If you are based in Asia or the Middle East and you use the Etisalat carrier network for your cellphone or smartphone, you can activate the network's roaming function to connect to the service while visiting the United States or another country. Once you've contacted Etisalat customer service and the carrier has enabled roaming, you can activate this feature on your mobile phone. Enable automatic roaming to automatically connect to other networks or select manual roaming to choose your preferred network from the list of available carriers.

Automatic Roaming
Step
Go to the main menu function on your mobile phone. You can usually access this using the "Menu" key on the phone handset or the "Menu" option on the home screen.
Step
Select "Settings" and then choose "Network Selection" or "Networks."
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Step
Click or tap "Automatic" from the list of options. If necessary, click or tap "OK" to save the changes.
Manual Roaming
Step
Open the phone's main menu.
Step
Go to "Settings" and select "Network Selection" or "Networks."
Step
Click or tap "Manual" from the options list.
Step
Select an available network from the list of carriers detected by the phone. Click or tap "OK."