Hi,
Thanks for your reply. My question was regarding the Network selection option (Manual / Automatic), which is no more available under Settings. My mobile service provider has offer for free roaming data services (unlimited) in select countries and with select operators in those countries. Recently I visited a foreign country where this free roaming data service is available. When I switched on my mobile upon reaching the country, it automatically selected another operator. I had to use the Airplane option to switch it on/off, to connect the operator and the selection was happening only automatically. Since it was selecting the operator automatically, I had to repeat the airplane option several times, till I get connected to my preferred operator. Since the network selection is in Automatic mode, many times the network got switched to different operators, other than my preferred operator. This is causing unnecessary stress to me.
I would urge Apple to bring back the Network Selection option under Settings. I am using both iPhone 6s Plus and iPhone 5s and this Network Selection option is not there anymore.