S8 text messages input mode

[Derek60]

in message settings - more settings -text messages there is :

delivery reports 

manage sim card messages

input mode

message centre

If  I touch and hold input mode I get 3 choices

GSM alphabet

Unicode

Automatic

Which of these should I be using - some of my sent messages are not being received and I wondered if this setting may have an inpact. When I sent a message earlier a pop up came up saying something along the lines that special charactors or emoji may not be supported by current mode - change input mode and try again

This is my first samsung phone and I'm still finding my way round - any ideas/ suggestions would be very welcome

thanks 

[BandOfBrothers]

I chose Automatic and all my texts are sent.

[Derek60 · Accepted solution]

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@BandOfBrothers wrote:
I chose Automatic and all my texts are sent.

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Thanks for the reply, I was thinking that was probably the best choice but couldn't find any explanation as to what each setting did. 

[BandOfBrothers]

You're welcome. 

There are a few internet pages on the subject. 

A.couple of examples. 

http://www.my-cool-sms.com/en/faq/what-is-a-unicode-sms

http://amilewide.npph.net/news/en/2011/01/sms-sur-portables-samsung-ou-est-passe-laccent-circonflexe...

[Ninnin]

Automatic

[Bobafetz]

So mine only displays delivery reports and manage sim card messages.  Not sure why.  Im completely unable to send emojies and i just migrated from  an s8 to and s8+ and never even ran into this issue on the s8.  I feel stumped. Someone help! 

[heylizzz]

"Samsung Galaxy S7 Active"

I have an issue where when I text "android users only" and close out of the conversation and go back to the main thread of conversations in messages; it will immediately delete the entire conversation. Like it never happened. 

Granted I know how to recover them, but that is a ***** pain. If i don't delete the conversation thread it shouldn't disappear. 

[Gush]

I'm having the same problem with my Galaxy s9 plus. Any suggestions on how 2 fix it?

[Tonyamcc77]

I'm having this problem with my s9 but when I click on settings the only option is manage sim card messages. I've called my service provider and they said it's something to do with the phone, called the place I got the phone and they said it's something to do with the provider. Smh

[Alicef]

I have a Samsung s8 Galaxy and I'm trying to find out how to be able to read when somebody gets my text message . Can someone please help me thank you and have a blessed day