yes i am the same coffeemum when dp is at work A LOT! he cant be reached, well i can ring and it will go to voicemail or i have in a crisis phoned the office and they have tried to get him but that isnt guaranteed (think child with kawasakies disease needing to go to hospital..) so i have mine on all the time so the school/pre-school etc can contact me and recenly my sister who had her first baby and was needing a bit of support to deal with the overwhelming nature of being a first time mum and bfeeding etc, he is 6wks old now tho so now i am just getting cute pics rather than 'he is feeding all the time when will he let me sleep' type txt :) is that essential? maybe not but she lives a long way away and i am gutted not to be there to help her out more, so to be able to offer her support via phone, even if just a txt in the middle of the night, then i am happy to do that.
but back to mealtimes, i mentioned this to the till worker in my local shop she was aghast that anyone would let their childrne use a phone/electronic device or read a book in a restaraunt, just 'plain rude' where her words.
no one is saying its easy, but children CAN learn to behave and sit nicely and partake in the the social event of sitting and eating a meal, be that at home or out somewhere.
we have done it by, always eating at the table at home. no toys etc at the table at home, they are told/shown by example how to sit nicely and eat and chat etc. any non acceptable behaviour is giving a warning, if the dont listen then they are taken away from the table until they are going to behave.
when going out for a meal book it at a time when your children arent tired, try child friendly restaraunts to begin wiht pizza express, or a nice pub with a garden where they can play before sitting down at the table.
for small children ie toddler i would take some small toy or colouring things, something QUIET to keep them occupied whilst they wait for food if necessary, it goes away when the the food is served.
just engage your children, let them read the menu, discuss the options, let them pick out a pudding for afters. just sit and talk and praise them for good behaviour and manners. any bad behaviour is treated the same as at home, a warning and then taken outside, we have had to do this once with ds2?
anyway that probably sounds horrible and smug, but i really think that all children are capable of learning how to eat out and behave, start young and be consistent, thats what a lot of parenting is being consistent and firm, but kind because in the long run it pays off!