Hi you can buy but SImkarten with the big operators in Peru you. German mobile phones work with Claro and MoviStar
Claro.com.PE
Movistar.com.PE
I am just taking in Peru and around the world to build an another network. It includes a world flat for mobile phones and landlines.
The provider will work around the world in every mobile phone network. With each other you telephone the flat rate free of charge. Non registered landlines cost maximum 2, 5cent / minute and mobile phones 15 CTS / minute. No matter if you call only the neighbors or calling from Peru to Germany or vice versa.
Click here for the info video
handyweltflat.TK
Mfg

check this out, for international prepaid sim at low cost:

InTouch SmartCards: Smart Free Quattro Global SIM Card With Auto Reload

Hi! We just run out of country specific sim card for peru but we have a better Sim Card for you which you can also use in more that 165 countries, we called it Smart Free Quattro. You can visit our website intouchsmartcards.com and you can just read through the details. Have a great day.

Hi everyone! Does anybody know where can I get a Peru
Sim Card? I will be leaving on January 29 and I have called several carrier but they don't have availability. I wanted to know if it is possible to get one before leaving the country or will it be more convenient if I will just get at the airport? Thank you.