Mina works on teaching Mamoru how to use his built-in features. Takuma and Mamoru go out on the town, and Takuma learns quite a bit about his young companion, as well as about how society treats robots in general.
I would infer the reason he can 
only communicate with me
‫أستنتج أن السبب في أنه
‫لا يستطيع التواصل معي
Er kann mit mir
nicht drahtlos kommunizieren,
Se comunica conmigo mediante audio
y no de forma inalámbrica
Se comunica conmigo mediante audio
y no de forma inalámbrica
Si nous communiquons à l’oral,
Probabilmente comunica vocalmente
anche con me
Eu diria que o motivo de ele só se comunicar
comigo por voz, em vez do Wi-Fi,
Делаю вывод, со мной он способен общаться
лишь голосом, а не по беспроводной связи,