Your EU SIM will incur standard international roaming charges here. Consider a local SIM or eSIM.
Roaming Zone Memberships
The Economic Community of West African States (ECOWAS) launched the Free Roaming Initiative to progressively reduce and eventually eliminate roaming charges among its 15 member states. Price reductions have been implemented in phases, though full elimination has faced delays. Coverage includes Nigeria, Ghana, Senegal, Côte d'Ivoire and 11 other West African nations.