Main iPhone 4 advantages over iPhone 3GS:

• New design;
• Exceptional glass panels;
• Brand new and hot display has 4x the resolution and contrast ratio;
• “FaceTime” that is an opportunity to see whoever you’re talking to;
• The fastest platform ever;
• Double the RAM amount;
• Wi-Fi support;
• The camera now boasts 5 megapixels and includes an LED flash, backside illumination sensor, and front camera with VGA resolution;
• Camcoder shoots 720p HD videos at 30fps
• Significantly improved battery life.

The only one evident minus is, of course, the price. Apple iPhone 4 is unfortunately more expensive than the 3 but you can get it at a juicy price from Dialaphone company.

There are three main ways of paying for your mobile phone use:  

• Pay-as-you-go (PAYG)

With such a tariff there’s no fixed monthly fee, you pay by ‘topping up’ your mobile credit in advance. 

• Pay-monthly contract

When choosing such a contract you pay a fixed monthly fee and get a free or almost free mobile phone and a certain number of call minutes and texts. As a rule, contracts last 12, 18 or 24 months.

• Sim-only contract

With a Sim-only contract you get a new mobile Sim card.

Choose the needed tariff according to your needs and thoroughly consider how much you use your mobile for calls, texts and internet browsing, and what kind of handset you would like to have. Find more here Phones4U.

• the new iPhone 4 comes with new operating system iOS4;
• 5MP camera with 5x optical zoom, LED Flash. Believe me, this camera work wonders and takes stunning pictures especially in comparison to previous iPhone models;
• HD video recording;
• 40% more battery life compared to 3G (it means: 40hrs music play back, 300hrs on standby, 10hrs of video playback);
• 24% thinner than 3GS only 9.3mm thick;
• the new iPhone boasts front facing camera for video calls;
• up to 32GB memory
• iAds revelation for marketing.

This phone is flawless and I definitely want one! If you would like to have one as well, you can find it here Dial a phone.

Pros of VoIP phones:

• price

This technology turns to be incredibly low cost. Of course, you’ll have to pay something but it will be much cheaper than your regular phone service. What is more, you are welcome to perform both home and international calls.

• portability

You can easily take your cheap phone service with you. All you need in order to make and take calls is a broadband connection and your VOIP account. From this point of view, VoIP is of the same convenience as a traditional email service.

• additions

VoIP phones offer a number of extra features like: call forwarding, call waiting, voicemail, caller ID and others.

Cons of VoIp phones:

• power outage

Such phones can be called a real disaster when there are power outages. In such situations regular phones are kept in service by the phone line but when the power goes out, you can forget about VoIP phone service.

• quality

You have to face the truth - VoIP relies on Internet connection, and strongly depends on it. So poor internet connections will lead to distorted voice quality.

• security

The important issue to think of is security, since this technology subject to service theft, viruses and malware.

Just remember, any technology has its own advantages and disadvantages, so think of them and take the right decision.