who is responsible when a problem arises

It is necessary therefore to

ensure that the relevant base station provides the operator's service subscribed to. The broadband GSM repeater amplifies the whole GSM900 frequency spectrum and the other operator's signal is also

amplified. This can mean that the user could have excellent operator 2 signal but weak operator 1 signal. The Service Providers/Network Operators use band selective transmitters and receivers (BTS)

to control their own customer's billing and added services. This means only that operator's dedicated channels in the frequency spectrum will be enhanced and not their oppositions. This also

assists them in identifying who is responsible when a problem arises.
Because each of these technologies is being run on a specific frequency bandwidth, a repeater for that bandwidth or combination repeater engineered for two or more bandwidths is needed to enhance

each format. GSM900 on the 900MHz frequency, DCS on the 1800MHz and UMTS on the 2.1GHz frequency. South Africa operates a Tri-Band network in its major suburban areas where all three services are

available. In rural and minor suburb arias a dualband (GSM900 & DCS) or a singleband GSM900 & GPRS network should be available. The UMTS cell extender cannot amplify 3G if the local BTS is not a

UMTS carrier even if the end user's mobile is 3G enabled. He will have to be satisfied with GPRS or Edge.
Why is all signal not available in all arias? No network available.
The HTC HD2 runs on Windows Mobile 6.5 and comes with a number of pre-loaded applications such as Windows Market Place, Microsoft MyPhone, Twitter, Facebook, YouTube, Opera 9.5 browser and Google

Maps. The Opera 9.5 Web browser makes browsing extremely comfortable. The phone has Wi-Fi connectivity for fast browsing and can also be used as a Wi-Fi router to connect to PCs. As expected, the

phone supports all popular Email clients. It comes with Mobile Office that lets you create and edit documents, worksheets and presentations. The Adobe Reader lets you open PDF files.
The phone comes with a built-in GPS router but no navigation software except Google Maps. It has a Quick GPS application but it comes with limited validity. Other utility features include RSS

reader hub, digital compass and remote desktop mobile. Using Facebook and Twitter on the phone is also convenient.