I had similar when there the other week. It would say I had full signal and connection but as soon as it connected to wifi it lit up like a Christmas tree. I did wonder if this was due to heavy network usage due to the euro Final that weekend...
If going somewhere warm, always pack swimwear and a pair of shorts in your hand luggage. After an airline losing my bag for 5 days on a 9 day trip to Mauritius in October I learnt the hard way, when I only had a jumper and thick leggings to wear in 3...