How can you communicate with someone if you don't speak the same language?

U can communicate with others who doesn't speak ur language through the body language or eyes or ur expressions face then u can get the communication ð

I will try through the body language or sign language. 

I will try to learn this language if I can.

Yes translator these days can help however it gives a wrong impression to other speaker or they might get offended by these actions and sometimes we are not connected to the internet to process the translation.

To make an effective communication even though there is a language barrier you can actually make an adjustment learn how to speak according to other speaker phase of speech. Talk slowly, use hand gestures to demonstrate, show pictures (if resources is available) so the other speaker can fully understand what you are trying to say. You need to show some patience as well while talking to them (why?) in that way you can actually show them your professionalism, in my experience it gave them some confidence to study atleast some word that might help them while speaking with other person (except you). You're only not helping yourself but you are helping them eventually.

 

I can use sign lnguage until and unless he/she gets me proper way.

There are many ways to learn to communicate with someone without speaking the same language

Such as: body language, sign language

It facilitates communication

Also you can learn some words for the other person

I can use my body language or emotions or some symbols to show my idea and to persuade him what I want.

Before visiting someone with a different language & culture, we must try to conduct some research on the internet to better understand his/her culture & few positive words to begin the conversation.

In case of any emergency or spontaneous meetup, the best way is to portray a positive body language & gestures to make them understand what we wish to say.

In today's smartphone world different applications are available to help resolve any such situation.

if this situation create then i will use the tecnique of communication like facial expressions and body language

I can use sign language until he or she gets me

It is known that approximately 80% of the communication is non verbal so the body language does the most part of it; therefore, we can communicate to a certain extent without us needing to use the other 20%, the verbal communication. Therefore, my answer is yes, we can communicate without speaking the same language but it depends on the message we need to deliver or receive.