Where from is my Iphone MTV43SX/A

You need to have Apple Care+.

Please refer to ---> See AppleCare+ Terms and Conditions for complete product details.

Please read this para...(Extracted from the above link)

"Service will be limited to the options available in the country where you request service. Service options, parts availability, and response times may vary. If service is not available for the Covered Equipment in a country that is not the country of purchase, you may be responsible for shipping and handling charges to facilitate service in a country where service is available. If you seek service in a country that is not the country of purchase, you must comply with all applicable import and export laws and regulations and be responsible for all customs duties, V.A.T. or GST, and other associated sales taxes and charges. For international service,

Apple may repair or exchange products and parts with comparable products and parts that comply with local standards."

If you do not buy Apple Care+ then...

IMPORTANT RESTRICTION FOR iPHONE, iPAD, APPLE TV AND HOMEPOD SERVICE.

Apple may restrict warranty service for iPhone, iPad, Apple TV and HomePod to the country where Apple or its Authorized Distributors originally sold the device.

Service & Support. Apple Authorised Service Providers and Online Support. Explore Service Locations. 

Find Locations - Apple

The combination of letters to the right of the recycling symbol is only used in Czech, Icelandic, and Slovak, so it came from one of those countries. All of them are part of the European Economic Area, so you'll have warranty and AppleCare+ coverage on it anywhere in the region and Switzerland.

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1. Yes.

2. Yes.

3. Those and Switzerland.

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