Trust Ingenico MOVE 5000 Wi-Fi Setup
From the main menu press the icon with the dots in the bottom-right hand corner.

Select Network.
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The terminal should display "Wi-Fi info" as the top option (this means it is set for a Wi-Fi connection). If it doesn't select change connectivity and then Wi-Fi before proceeding.
Select Settings.
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This will perform a scan for networks. Select your network and enter the Wi-Fi password. You will need to keep pressing the corresponding number on the keypad. As shown below it will cycle through lower case letters first, then upper case followed by the corresponding number as you keep pressing it.
If the letters are not present on the keypad use the key below:
1 - Q, Z
2 - A, B, C
3 - D, E, F
4 - G, H, I
5 - J, K, L
6 - M, N, O
7 - P, R, S
8 - T, U, V
9 - W, X, Y
0 - Symbols
# - Symbols
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Press the green button once entered.
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The terminal will then display connected if successful.
Otherwise this confirms that the password has been entered incorrectly so we need to repeat the previous steps again.
For connection troubleshooting click here.