Yes, this is a reasonable question that may occur in your mind. But here is what I want to say about buying mobile phones online. Of course you will get a chance to see and sometimes touch / use (demo) the mobile phones before buying if you buy in a local shop, but there are few real disadvantages when you buy mobile phones locally compared to buying them online.
Cheaper prices: Yes, when you go online, you will see comparatively cheaper prices for any products. The main reason is that it reduces a lot of overhead in costs. I have read in a study, you will find buying products online is somewhere 6 to 16% cheaper compared to regular stores. Another huge benefit comes to you in the form of coupons. You can find coupon codes to use on any popular online store which adds to your savings.
Apart from cost saving a most important feature of online shops is the comparison of products. You are facilitated with mobile phone comparison – compare any number of products in any detail. Also read out user reviews and discuss with users. This is a definite lack when you buy offline. When you buy at stores, you will see the boxed product only on the box or catelog or at the most an advert, but if you go online shopping, you can see the product in varied angles and you can find many more photographs which is of great use. Also the amount of information that can be published online is highly economic than printed hard copies. This makes the internet shops rich with information compared with local stores.
Another great reason I would like to discuss is the ease of purchase. Online means is the most convinient option as just with few mouse clicks you can have the product at your doorsteps in a week. These days everyone is advanced in technology and hence shopping online is a bliss.
If you consider the support and service for your purchased mobile phone, it is same in any case. You have to get them serviced only at authorized service centers irrespective of your dealer.

hey you are right that we can found thing cheaper in online shopping. i am not going to hurt you but the view from different sides is also same when we see it physically. the online shopping take time near 7 to 15 days of shipping. and from the local dealer we can receive it on the spot. in the term of cost their are shipping charges, delivery cost and all other such type of expenses are included