Swapping USDT for Gram
Buying TON’s coin comes with a naming trap. It is the one swap here where the coin and the network share a word. Most apps call the coin TON, the same word as the network. This wallet calls the network TON and the coin Gram, because that is the ticker it carries here, and a symbol translated on some screens but not others is how a balance ends up priced at zero on one of them.
100 USDT 
Gram (TON) Gram is the coin, TON is the network
Nothing else differs. An exchange showing TON as a coin means the same asset you receive here as Gram. The wallet keeps one name end to end so icons, prices, balances and history all agree, rather than prettifying it in the picker and leaving it raw everywhere else.
What the coin is for
TON charges its transfers in Gram, and its ecosystem lives inside Telegram: usernames, gifts, mini apps. If you hold dollars and want to spend inside that ecosystem, this is the swap that gets you there.
You do not need it to move dollars
Holding Gram is not a precondition for sending USDT on TON: that fee is settled inside the operation like every other. Buy Gram because you want Gram, not to unstick something.
A coin with somewhere to be spent
Most native coins are held because a chain demands them. Gram is unusual in having an economy attached that people use without knowing they are on a blockchain at all: usernames bought and sold, gifts sent in chats, mini apps charging for things. If you want to take part in that, you need the coin rather than dollars.
It is volatile and the dollars were not
This is an exchange, not a transfer. The amount that arrives is fixed at the moment you sign, and its value in dollars is not fixed at all. Swap what you intend to spend, not what you intend to keep stable.
Read next
Several wallets in one account, unlinked on-chain
Hold as many wallets as you need inside one Telegram account. Their addresses are not linked on-chain, so paying from one tells nobody about the others. Send to a @username or to any address.
Questions
Is Gram the same as TON?
Gram is the coin, TON is the network. Other apps use one word for both; this wallet does not.
Do I need Gram to send USDT on TON?
No. The fee comes out of the operation, in the token you are sending.
How fast does it arrive?
TON settles in about five seconds; the quote shows the estimate for the whole route before you sign.