Hmm, interesting definitions of reading.
Ds1 - he could read his letters, and the first Peter and Jane book, but I wouldn't describe him as 'reading' before he started school. Now at the end of Yr1, and nearly 6, he's reading Horrid Henry in his head for fun, and can basically read anything.
Dd - she was a very early talker, and she CAN read I think - she is 3.9, starting reception in September, and she can sound words out, work them out. She can also do it the other way round, if you ask her to spell a simple word she can do that. She can read Level 2 and Level 3 ORT books. She also knows about 30 of the reception words.
This is just something she has done - when she has asked to 'do reading' we've done it, tried to make it very child led. She just likes 'literacy', as she can write as well. But there are other things she doesn't do so well, she is not so confident with numbers as ds1 was.
I could read before I went to school because my mum taught me, plus the professor in the uni dept she lectured in taught me. My mum said I had read Alice in Wonderland before starting reception . I have to say I was BORED BORED BORED in reception, and have tried not to put dd in that situation.
I hope that doesn't sound like 'bragging' - it's very difficult to explain what dd is doing, without it sounding like that, but honestly it's just something she happens to find easy! And I've seen with ds1 how they level out once they're at school.