How to chat on WeChat in Chinese

可以加你微信吗？ — kěyǐ jiā nǐ Wēixìn ma? — Can I add you on WeChat?
方便加一下微信吗？ — fāngbiàn jiā yíxià Wēixìn ma? — Will it be convenient to add to WeChat?
你微信号多少？ — nǐ Wēixìn hào duōshao? — What is your WeChat ID?
我扫你吧。 — wǒ sǎo nǐ ba — I'll scan you
你扫我吧。 — nǐ sǎo wǒ ba — Scan me
我加你了，麻烦通过一下好友申请。 — wǒ jiā nǐ le, máfan tōngguò yíxià hǎoyǒu shēnqǐng — I have added you, please confirm your application
请把地址发给我。 — qǐng bǎ dìzhǐ fā gěi wǒ — Send me the address please
发个链接给我。 — fā ge liànjiē gěi wǒ — Send me the link
我给你发定位。 — wǒ gěi nǐ fā dìngwèi — I will send you geolocation
我收到了。 — wǒ shōudào le — I received
稍等一下。 — shāo děng yíxià — Wait a little
我的中文不太好。 — wǒ de Zhōngwén bú tài hǎo — My Chinese is not very good
请打字发给我。 — qǐng dǎzì fā gěi wǒ — Please write in text
可以发语音吗？ — kěyǐ fā yǔyīn ma? — Can I send a voice message?
我们几点见？ — wǒmen jǐ diǎn jiàn? — What time will we meet?
我们在哪里见？ — wǒmen zài nǎlǐ jiàn? — Where will we meet?
我把照片发给你。 — wǒ bǎ zhàopiàn fā gěi nǐ — I'll send you a photo
我把地址发给你。 — wǒ bǎ dìzhǐ fā gěi nǐ — I'll send you the address
我发定位了。 — wǒ fā dìngwèi le — I sent the geolocation
你收到了吗？ — nǐ shōudào le ma? — Did you receive it?
没问题。 — méi wèntí — No problem
我们明天见。 — wǒmen míngtiān jiàn — Let's meet tomorrow

Mini dialogue

方便加一下微信吗？ — fāngbiàn jiā yíxià Wēixìn ma? — Will it be convenient to add to WeChat?
可以。你扫我吧。 — kěyǐ. nǐ sǎo wǒ ba. — Can. Scan me.
我加你了，麻烦通过一下好友申请。 — wǒ jiā nǐ le, máfan tōngguò yíxià hǎoyǒu shēnqǐng. — I have added you, please confirm your application.
好了。 — hǎo le. — Ready.
请把地址发给我。我的中文不太好，请打字发给我。 — qǐng bǎ dìzhǐ fā gěi wǒ. wǒ de Zhōngwén bú tài hǎo, qǐng dǎzì fā gěi wǒ. — Please send me the address. My Chinese is not very good, please write in text.
没问题。我发定位给你。 — méi wèntí. wǒ fā dìngwèi gěi nǐ. — No problem. I will send you the geolocation.
我收到了。我们几点见？ — wǒ shōudào le. wǒmen jǐ diǎn jiàn? — Received. What time will we meet?

Cultural hint

In China, WeChat works as a business card, payment tool, and booking channel. Exchanging QR codes is normal. If your Chinese is weak, ask people to write text: 请打字发给我 (qǐng dǎzì fā gěi wǒ - “please send it to me in writing”). The phrase 我加你了，麻烦通过一下 (wǒ jiā nǐ le, máfan tōngguò yíxià - “I added you; please approve it”) is a standard polite reminder to approve a friend request.