Mobile Ad Copy
The amount of ads doesn't give you any kind of "boost".
In terms of Good Practices, it's recommended that you use 2 to 3 ad copies per adgroup, for you to have a chance to compare different text and offers. If you use only one ad per group, you won't be able to compare data.
Most companies usually creates a more generic ad, talking about the company it self, and the other ad usually offering something, a discount, free shipping and so on, so you can decide "when I talk about discounts, i have better results", and then you move to 2 different variations of ads talking about discounts.
Hope it helps.
Leandro Martinez | Basta1Click