What is Singapore's main landline provider?

Just like in any country, there aren't many investments that guarantee your principal as well as returns in Singapore but of those that do, you should be very careful of scams. One other thing to understand is that when you get to enjoy such safety in your investments and visibility in your cashflows, you need to be prepared to accept a rate of return that is close to the risk-free rate. Your first bet is to invest on Singapore Government Treasury bills and/or Singapore Government Bonds. You can also try investing on saving plans or fixed deposits but the returns are low. If you want higher returns then you really need to invest on high risk investments.

If you are looking for the best without thinking about how much it would cost you then you can try Singtel combo 3 where you not only get unlimited data but also unlimited calls and SMS wth a phone subsidy. It comes with a contract and costs S$108.80 but if you want the full package then this is the plan that you are looking for. If you are on a budget and only want mobile data then you should try Zero 1GB to Unlimited data however the speed will be throtted after 1 gb.

According to ValueChampion's findings, undergraduate programmes pertaining to computing, engineering, architecture, pharmacy and law tend to have the highest level of return on investment on their tuitions immediately upon graduation. In particular, a bachelor's degree in law stood out as having the 2nd highest median gross monthly wage* and the 5th highest full-time employment rate.

Your interpretations are correct but we can look deeper into its characteristics. A bond has a face value which is the amount the bond will be worth at maturity and the amount the bond issuer uses when calculating interest payments. A bond has a coupon rate which is similar to interest rates. A bond shouls always have a maturity date which is self explanatory. Probobly the most important characteristic is the issue price which is the original price the issuer sells the bond.

There are a lot of cheap plans but the best that provides what you are looking for are StarHubGiga and M1 which offers, 1,000 SMS, 1,000 min of calls and 25-30GB of data for only S$25.but if you're looking for something cheaper but still somewhat decent, you could try Zero1 though you will encounter speed reduction after 1GB of mobile data use.