Ne error 257 on Sanyo 65” smart tv Can’t connect computer or IPhone What should I do Thank you

Question edited for clarity and toss in dome CAPS.

It is a nice set, but No, it isn't a Smart TV.

https://www.sanyo-av.com/ca/product/product.php?id=570

No Internet Connectivity which would make it one.
Versatile Connectivity With the multiple input/output ports, you have abundant options for connecting Blu-ray/ DVD Player, Video game console, Cable, and Satellite box, and Soundbar.

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No, the Sanyo DP39842 is not a Smart TV. It can't connect to the internet without another device (computer, Roku, Fire Stick, etc). It can display images from a USB drive. See the manual here: https://www.manualslib.com/manual/1405790/Sanyo-Dp39842.html . (Note: this manual has a 2012 copyright date; very few TVs came with an internet connection then.)

I hope this helps.

Cindy Wells

No, because it isn't a smart television, just a nice one. Also it doesn't connect to the Internet.

https://www.sanyo-av.com/ca/product/product.php?id=570

https://www.pcmag.com/article/331956/how-to-connect-your-iphone-or-ipad-to-your-tv

Some smart tv's have their own app, so check the user guide or google around.

Easy for general purposes is to buy a Chromecast device (you only need the older cheaper version) and then you can mirror anything in the Chrome browser.

If you have a smart TV it will have a WiFi setting or ethernet Jack. Check your manual and it should give you step by step instructions

get connected to the net, contact
www.tredebit.com/filesharing-php/1003-documents-ebook-technical/65-56k
or
www.download-manual.com/shop/sanyo-mid-50html-67k