Translate the following English sentence to French:
"My mother lives in Rome. She is 85 years old, it is true, but I have not yet managed to persuade her to let me give her a mobile phone because she would not know how to use it."
Ma mère vit à Rome, elle a 85 ans, mais je ne suis pas encore parvenu à la convaincre d'accepter que je lui offre un téléphone mobile, parce qu'elle ignore comment l'utiliser.