Whatever the local WiFi hotspots or hotel charge.
But I don't think you mean "WiFi " but you mean using data while roaming on a Turkish mobile network.
Outside the EU, you cannot use your usual UK allowances there but will need to pay the charges or buy roaming add-ons as set out in https://ee.co.uk/help/mobile/roaming/roaming-costs/countries/turkeyandnortherncyprus.
If you are on contract, remember to text ROAMING to 150 before you leave UK to ensure the roaming ability is enabled on your account.
If you are on PAYG, make sure you have already used your PAYG SIM to make a call or text in the UK.
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To phone EE CS: Dial Freephone +44 800 079 8586 - Option 1 for Mobile Phone & Mobile Broadband or Option 2 for Home Broadband & Home Phone
ISPs: 1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC => 2014: EE 20 Meg WBC => 2020: EE 40 Meg FTTC => 2022: EE 80 Meg FTTC (no landline number)
